51563625 has 32 divisors (see below), whose sum is σ = 90330240. Its totient is φ = 26049600.

The previous prime is 51563597. The next prime is 51563627. The reversal of 51563625 is 52636515.

It is not a de Polignac number, because 51563625 - 2⁵ = 51563593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51563627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3507 + ... + 10743.

It is an arithmetic number, because the mean of its divisors is an integer number (2822820).

Almost surely, 2^51563625 is an apocalyptic number.

It is an amenable number.

51563625 is a deficient number, since it is larger than the sum of its proper divisors (38766615).

51563625 is a wasteful number, since it uses less digits than its factorization.

51563625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7274 (or 7264 counting only the distinct ones).

The product of its digits is 27000, while the sum is 33.

The square root of 51563625 is about 7180.7816426904. The cubic root of 51563625 is about 372.2040951380.

The spelling of 51563625 in words is "fifty-one million, five hundred sixty-three thousand, six hundred twenty-five".