51137025 has 24 divisors (see below), whose sum is σ = 85036224. Its totient is φ = 27115200.

The previous prime is 51136991. The next prime is 51137033. The reversal of 51137025 is 52073115.

It is not a de Polignac number, because 51137025 - 2¹² = 51132929 is a prime.

It is a super-2 number, since 2×51137025² = 5229990651701250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51136986 and 51137004.

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, 11692 + ... + 15458.

It is an arithmetic number, because the mean of its divisors is an integer number (3543176).

Almost surely, 2^51137025 is an apocalyptic number.

It is an amenable number.

51137025 is a deficient number, since it is larger than the sum of its proper divisors (33899199).

51137025 is a wasteful number, since it uses less digits than its factorization.

51137025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3961 (or 3956 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 51137025 is about 7151.0156621280. The cubic root of 51137025 is about 371.1748025320.

The spelling of 51137025 in words is "fifty-one million, one hundred thirty-seven thousand, twenty-five".