51918825 has 24 divisors (see below), whose sum is σ = 98102848. Its totient is φ = 23734080.

The previous prime is 51918809. The next prime is 51918847. The reversal of 51918825 is 52881915.

It is not a de Polignac number, because 51918825 - 2⁴ = 51918809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48922 + ... + 49971.

Almost surely, 2^51918825 is an apocalyptic number.

It is an amenable number.

51918825 is a deficient number, since it is larger than the sum of its proper divisors (46184023).

51918825 is a wasteful number, since it uses less digits than its factorization.

51918825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98913 (or 98908 counting only the distinct ones).

The product of its digits is 28800, while the sum is 39.

The square root of 51918825 is about 7205.4718790652. The cubic root of 51918825 is about 373.0567923549.

The spelling of 51918825 in words is "fifty-one million, nine hundred eighteen thousand, eight hundred twenty-five".