53712520 has 32 divisors (see below), whose sum is σ = 127963800. Its totient is φ = 20220928.

The previous prime is 53712511. The next prime is 53712539. The reversal of 53712520 is 2521735.

It can be written as a sum of positive squares in 4 ways, for example, as 52794756 + 917764 = 7266^2 + 958^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38815 + ... + 40174.

Almost surely, 2^53712520 is an apocalyptic number.

It is an amenable number.

53712520 is an abundant number, since it is smaller than the sum of its proper divisors (74251280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53712520 is a wasteful number, since it uses less digits than its factorization.

53712520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79017 (or 79013 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 53712520 is about 7328.8825887716. The cubic root of 53712520 is about 377.3043765177.

The spelling of 53712520 in words is "fifty-three million, seven hundred twelve thousand, five hundred twenty".