51712625 has 16 divisors (see below), whose sum is σ = 67347072. Its totient is φ = 39569200.

The previous prime is 51712601. The next prime is 51712627. The reversal of 51712625 is 52621715.

It is not a de Polignac number, because 51712625 - 2¹⁸ = 51450481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51712627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6119 + ... + 11868.

It is an arithmetic number, because the mean of its divisors is an integer number (4209192).

Almost surely, 2^51712625 is an apocalyptic number.

It is an amenable number.

51712625 is a deficient number, since it is larger than the sum of its proper divisors (15634447).

51712625 is a wasteful number, since it uses less digits than its factorization.

51712625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18025 (or 18015 counting only the distinct ones).

The product of its digits is 4200, while the sum is 29.

The square root of 51712625 is about 7191.1490736877. The cubic root of 51712625 is about 372.5622615624.

The spelling of 51712625 in words is "fifty-one million, seven hundred twelve thousand, six hundred twenty-five".