51357712 has 40 divisors (see below), whose sum is σ = 118670976. Its totient is φ = 21052416.

The previous prime is 51357701. The next prime is 51357727. The reversal of 51357712 is 21775315.

It is a super-2 number, since 2×51357712² = 5275229163749888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7393 + ... + 12544.

Almost surely, 2^51357712 is an apocalyptic number.

It is an amenable number.

51357712 is an abundant number, since it is smaller than the sum of its proper divisors (67313264).

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

51357712 is a wasteful number, since it uses less digits than its factorization.

51357712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19975 (or 19969 counting only the distinct ones).

The product of its digits is 7350, while the sum is 31.

The square root of 51357712 is about 7166.4295154561. The cubic root of 51357712 is about 371.7079837256.

The spelling of 51357712 in words is "fifty-one million, three hundred fifty-seven thousand, seven hundred twelve".