51535025 has 12 divisors (see below), whose sum is σ = 64988400. Its totient is φ = 40528080.

The previous prime is 51535021. The next prime is 51535037. The reversal of 51535025 is 52053515.

It is not a de Polignac number, because 51535025 - 2² = 51535021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51534985 and 51535003.

It is not an unprimeable number, because it can be changed into a prime (51535021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15995 + ... + 18944.

It is an arithmetic number, because the mean of its divisors is an integer number (5415700).

Almost surely, 2^51535025 is an apocalyptic number.

It is an amenable number.

51535025 is a deficient number, since it is larger than the sum of its proper divisors (13453375).

51535025 is a wasteful number, since it uses less digits than its factorization.

51535025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35008 (or 35003 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 51535025 is about 7178.7899398158. The cubic root of 51535025 is about 372.1352675110.

The spelling of 51535025 in words is "fifty-one million, five hundred thirty-five thousand, twenty-five".