51725715 has 8 divisors (see below), whose sum is σ = 82761168. Its totient is φ = 27587040.

The previous prime is 51725711. The next prime is 51725749. The reversal of 51725715 is 51752715.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51725715 - 2² = 51725711 is a prime.

It is a super-2 number, since 2×51725715² = 5351099184522450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51725711) 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, 1724176 + ... + 1724205.

It is an arithmetic number, because the mean of its divisors is an integer number (10345146).

Almost surely, 2^51725715 is an apocalyptic number.

51725715 is a deficient number, since it is larger than the sum of its proper divisors (31035453).

51725715 is a wasteful number, since it uses less digits than its factorization.

51725715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448389.

The product of its digits is 12250, while the sum is 33.

The square root of 51725715 is about 7192.0591627155. The cubic root of 51725715 is about 372.5936944319.

Subtracting 51725715 from its reverse (51752715), we obtain a cube (27000 = 30³).

The spelling of 51725715 in words is "fifty-one million, seven hundred twenty-five thousand, seven hundred fifteen".