Search a number
-
+
51082544 = 2431181569
BaseRepresentation
bin1100001011011…
…1010100110000
310120010021002002
43002313110300
5101034120134
65022513132
71160123462
oct302672460
9116107062
1051082544
1126920087
12151357a8
13a777076
146ada132
15474087e
hex30b7530

51082544 has 40 divisors (see below), whose sum is σ = 102910080. Its totient is φ = 24537600.

The previous prime is 51082519. The next prime is 51082547. The reversal of 51082544 is 44528015.

It is not an unprimeable number, because it can be changed into a prime (51082547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89492 + ... + 90060.

It is an arithmetic number, because the mean of its divisors is an integer number (2572752).

Almost surely, 251082544 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 51082544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51455040).

51082544 is an abundant number, since it is smaller than the sum of its proper divisors (51827536).

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

51082544 is a wasteful number, since it uses less digits than its factorization.

51082544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789 (or 783 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 51082544 is about 7147.2053279586. The cubic root of 51082544 is about 371.0429400826.

The spelling of 51082544 in words is "fifty-one million, eighty-two thousand, five hundred forty-four".

Divisors: 1 2 4 8 16 31 62 124 181 248 362 496 569 724 1138 1448 2276 2896 4552 5611 9104 11222 17639 22444 35278 44888 70556 89776 102989 141112 205978 282224 411956 823912 1647824 3192659 6385318 12770636 25541272 51082544