51113025 has 60 divisors (see below), whose sum is σ = 97045872. Its totient is φ = 26580960.

The previous prime is 51113011. The next prime is 51113053. The reversal of 51113025 is 52031115.

51113025 is a `hidden beast` number, since 511 + 130 + 25 = 666.

It is not a de Polignac number, because 51113025 - 2⁴ = 51113009 is a prime.

It is a super-2 number, since 2×51113025² = 5225082649301250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51112989 and 51113007.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 86782 + ... + 87368.

Almost surely, 2^51113025 is an apocalyptic number.

It is an amenable number.

51113025 is a deficient number, since it is larger than the sum of its proper divisors (45932847).

51113025 is a wasteful number, since it uses less digits than its factorization.

51113025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 51113025 is about 7149.3373818837. The cubic root of 51113025 is about 371.1167259606.

The spelling of 51113025 in words is "fifty-one million, one hundred thirteen thousand, twenty-five".