51457525 has 12 divisors (see below), whose sum is σ = 72922912. Its totient is φ = 35285040.

The previous prime is 51457451. The next prime is 51457537. The reversal of 51457525 is 52575415.

It is not a de Polignac number, because 51457525 - 2⁹ = 51457013 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

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, 146847 + ... + 147196.

Almost surely, 2^51457525 is an apocalyptic number.

It is an amenable number.

51457525 is a deficient number, since it is larger than the sum of its proper divisors (21465387).

51457525 is a wasteful number, since it uses less digits than its factorization.

51457525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294060 (or 294055 counting only the distinct ones).

The product of its digits is 35000, while the sum is 34.

The square root of 51457525 is about 7173.3900632825. The cubic root of 51457525 is about 371.9486309960.

It can be divided in two parts, 51457 and 525, that multiplied together give a triangular number (27014925 = T₇₃₅₀).

The spelling of 51457525 in words is "fifty-one million, four hundred fifty-seven thousand, five hundred twenty-five".