53217072 has 60 divisors (see below), whose sum is σ = 157701960. Its totient is φ = 16694784.

The previous prime is 53217023. The next prime is 53217091. The reversal of 53217072 is 27071235.

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, 8422 + ... + 13317.

It is an arithmetic number, because the mean of its divisors is an integer number (2628366).

Almost surely, 2^53217072 is an apocalyptic number.

It is an amenable number.

53217072 is an abundant number, since it is smaller than the sum of its proper divisors (104484888).

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

53217072 is a wasteful number, since it uses less digits than its factorization.

53217072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21770 (or 21761 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 53217072 is about 7295.0032213838. The cubic root of 53217072 is about 376.1406973075.

The spelling of 53217072 in words is "fifty-three million, two hundred seventeen thousand, seventy-two".