51258704 has 30 divisors (see below), whose sum is σ = 115529994. Its totient is φ = 21967680.

The previous prime is 51258703. The next prime is 51258731. The reversal of 51258704 is 40785215.

It can be written as a sum of positive squares in only one way, i.e., 28601104 + 22657600 = 5348^2 + 4760^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51258703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31907 + ... + 33474.

Almost surely, 2^51258704 is an apocalyptic number.

It is an amenable number.

51258704 is an abundant number, since it is smaller than the sum of its proper divisors (64271290).

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

51258704 is a wasteful number, since it uses less digits than its factorization.

51258704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65403 (or 65390 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 51258704 is about 7159.5184195587. The cubic root of 51258704 is about 371.4689690634.

The spelling of 51258704 in words is "fifty-one million, two hundred fifty-eight thousand, seven hundred four".