53213508 has 72 divisors (see below), whose sum is σ = 138098688. Its totient is φ = 17273088.

The previous prime is 53213497. The next prime is 53213543. The reversal of 53213508 is 80531235.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 418941 + ... + 419067.

Almost surely, 2^53213508 is an apocalyptic number.

It is an amenable number.

53213508 is an abundant number, since it is smaller than the sum of its proper divisors (84885180).

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

53213508 is a wasteful number, since it uses less digits than its factorization.

53213508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 53213508 is about 7294.7589404997. The cubic root of 53213508 is about 376.1323002817.

The spelling of 53213508 in words is "fifty-three million, two hundred thirteen thousand, five hundred eight".