51572525 has 12 divisors (see below), whose sum is σ = 64043892. Its totient is φ = 41197440.

The previous prime is 51572503. The next prime is 51572533. The reversal of 51572525 is 52527515.

It can be written as a sum of positive squares in 6 ways, for example, as 1247689 + 50324836 = 1117^2 + 7094^2 .

It is a de Polignac number, because none of the positive numbers 2^k-51572525 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51572491 and 51572500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24827 + ... + 26823.

It is an arithmetic number, because the mean of its divisors is an integer number (5336991).

Almost surely, 2^51572525 is an apocalyptic number.

It is an amenable number.

51572525 is a deficient number, since it is larger than the sum of its proper divisors (12471367).

51572525 is a wasteful number, since it uses less digits than its factorization.

51572525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3040 (or 3035 counting only the distinct ones).

The product of its digits is 17500, while the sum is 32.

The square root of 51572525 is about 7181.4013256467. The cubic root of 51572525 is about 372.2255083330.

The spelling of 51572525 in words is "fifty-one million, five hundred seventy-two thousand, five hundred twenty-five".