51860724 has 24 divisors (see below), whose sum is σ = 122468640. Its totient is φ = 17078304.

The previous prime is 51860723. The next prime is 51860741. The reversal of 51860724 is 42706815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51860723) 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, 25039 + ... + 27030.

It is an arithmetic number, because the mean of its divisors is an integer number (5102860).

Almost surely, 2^51860724 is an apocalyptic number.

It is an amenable number.

51860724 is an abundant number, since it is smaller than the sum of its proper divisors (70607916).

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

51860724 is a wasteful number, since it uses less digits than its factorization.

51860724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52159 (or 52157 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 51860724 is about 7201.4390228620. The cubic root of 51860724 is about 372.9175810443.

The spelling of 51860724 in words is "fifty-one million, eight hundred sixty thousand, seven hundred twenty-four".