51749264 has 40 divisors (see below), whose sum is σ = 119575680. Its totient is φ = 21212928.

The previous prime is 51749249. The next prime is 51749329. The reversal of 51749264 is 46294715.

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, 7469 + ... + 12620.

It is an arithmetic number, because the mean of its divisors is an integer number (2989392).

Almost surely, 2^51749264 is an apocalyptic number.

It is an amenable number.

51749264 is an abundant number, since it is smaller than the sum of its proper divisors (67826416).

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

51749264 is a wasteful number, since it uses less digits than its factorization.

51749264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20127 (or 20121 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 51749264 is about 7193.6961292509. The cubic root of 51749264 is about 372.6502290312.

The spelling of 51749264 in words is "fifty-one million, seven hundred forty-nine thousand, two hundred sixty-four".