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51492276 = 223211211821
BaseRepresentation
bin1100010001101…
…1010110110100
310120220002010100
43010123112310
5101140223101
65035354100
71163451153
oct304332664
9116802110
1051492276
112707aa00
12152b2930
13a88b704
146ba559a
1547c1e86
hex311b5b4

51492276 has 54 divisors (see below), whose sum is σ = 143081666. Its totient is φ = 15602400.

The previous prime is 51492257. The next prime is 51492281. The reversal of 51492276 is 67229415.

51492276 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 35283600 + 16208676 = 5940^2 + 4026^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 51492276.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1555 + ... + 10266.

Almost surely, 251492276 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51492276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71540833).

51492276 is an abundant number, since it is smaller than the sum of its proper divisors (91589390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51492276 is a wasteful number, since it uses less digits than its factorization.

51492276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11853 (or 11837 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 51492276 is about 7175.8118704437. The cubic root of 51492276 is about 372.0323419678.

51492276 divided by its sum of digits (36) gives a palindrome (1430341).

The spelling of 51492276 in words is "fifty-one million, four hundred ninety-two thousand, two hundred seventy-six".

Divisors: 1 2 3 4 6 9 11 12 18 22 33 36 44 66 99 121 132 198 242 363 396 484 726 1089 1452 2178 4356 11821 23642 35463 47284 70926 106389 130031 141852 212778 260062 390093 425556 520124 780186 1170279 1430341 1560372 2340558 2860682 4291023 4681116 5721364 8582046 12873069 17164092 25746138 51492276