53660520 has 48 divisors (see below), whose sum is σ = 174397860. Its totient is φ = 14309376.

The previous prime is 53660507. The next prime is 53660567. The reversal of 53660520 is 2506635.

53660520 is a `hidden beast` number, since 5 + 36 + 605 + 20 = 666.

53660520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 45400644 + 8259876 = 6738^2 + 2874^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74169 + ... + 74888.

Almost surely, 2^53660520 is an apocalyptic number.

It is an amenable number.

53660520 is an abundant number, since it is smaller than the sum of its proper divisors (120737340).

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

53660520 is a wasteful number, since it uses less digits than its factorization.

53660520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149074 (or 149067 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 53660520 is about 7325.3341220725. The cubic root of 53660520 is about 377.1825789528.

The spelling of 53660520 in words is "fifty-three million, six hundred sixty thousand, five hundred twenty".