51632725 has 6 divisors (see below), whose sum is σ = 64024610. Its totient is φ = 41306160.

The previous prime is 51632717. The next prime is 51632771. The reversal of 51632725 is 52723615.

It can be written as a sum of positive squares in 3 ways, for example, as 15944049 + 35688676 = 3993^2 + 5974^2 .

It is not a de Polignac number, because 51632725 - 2³ = 51632717 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1032630 + ... + 1032679.

Almost surely, 2^51632725 is an apocalyptic number.

It is an amenable number.

51632725 is a deficient number, since it is larger than the sum of its proper divisors (12391885).

51632725 is a wasteful number, since it uses less digits than its factorization.

51632725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065319 (or 2065314 counting only the distinct ones).

The product of its digits is 12600, while the sum is 31.

The square root of 51632725 is about 7185.5914857442. The cubic root of 51632725 is about 372.3702834977.

The spelling of 51632725 in words is "fifty-one million, six hundred thirty-two thousand, seven hundred twenty-five".