53557525 has 24 divisors (see below), whose sum is σ = 76177664. Its totient is φ = 36590400.

The previous prime is 53557481. The next prime is 53557529. The reversal of 53557525 is 52575535.

It is a de Polignac number, because none of the positive numbers 2^k-53557525 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53557529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80695 + ... + 81355.

Almost surely, 2^53557525 is an apocalyptic number.

It is an amenable number.

53557525 is a deficient number, since it is larger than the sum of its proper divisors (22620139).

53557525 is a wasteful number, since it uses less digits than its factorization.

53557525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141 (or 1136 counting only the distinct ones).

The product of its digits is 131250, while the sum is 37.

The square root of 53557525 is about 7318.3006907342. The cubic root of 53557525 is about 376.9411053274.

It can be divided in two parts, 5355 and 7525, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 53557525 in words is "fifty-three million, five hundred fifty-seven thousand, five hundred twenty-five".