51715724 has 12 divisors (see below), whose sum is σ = 90741504. Its totient is φ = 25789584.

The previous prime is 51715709. The next prime is 51715747. The reversal of 51715724 is 42751715.

It is a super-2 number, since 2×51715724² = 5349032217688352, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15347 + ... + 18410.

It is an arithmetic number, because the mean of its divisors is an integer number (7561792).

Almost surely, 2^51715724 is an apocalyptic number.

It is an amenable number.

51715724 is a deficient number, since it is larger than the sum of its proper divisors (39025780).

51715724 is a wasteful number, since it uses less digits than its factorization.

51715724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34144 (or 34142 counting only the distinct ones).

The product of its digits is 9800, while the sum is 32.

The square root of 51715724 is about 7191.3645436732. The cubic root of 51715724 is about 372.5697036354.

The spelling of 51715724 in words is "fifty-one million, seven hundred fifteen thousand, seven hundred twenty-four".