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51246 = 2331373
BaseRepresentation
bin1100100000101110
32121022000
430200232
53114441
61033130
7302256
oct144056
977260
1051246
1135558
12257a6
131a430
1414966
15102b6
hexc82e

51246 has 32 divisors (see below), whose sum is σ = 124320. Its totient is φ = 15552.

The previous prime is 51241. The next prime is 51257. The reversal of 51246 is 64215.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 666 + ... + 738.

It is an arithmetic number, because the mean of its divisors is an integer number (3885).

251246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62160).

51246 is an abundant number, since it is smaller than the sum of its proper divisors (73074).

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

51246 is a wasteful number, since it uses less digits than its factorization.

51246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97 (or 91 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 51246 is about 226.3757937590. The cubic root of 51246 is about 37.1438278135.

The spelling of 51246 in words is "fifty-one thousand, two hundred forty-six".

Divisors: 1 2 3 6 9 13 18 26 27 39 54 73 78 117 146 219 234 351 438 657 702 949 1314 1898 1971 2847 3942 5694 8541 17082 25623 51246