53231616 has 135 divisors (see below), whose sum is σ = 162294951. Its totient is φ = 16809984.

The previous prime is 53231609. The next prime is 53231621. The reversal of 53231616 is 61613235.

The square root of 53231616 is 7296.

It is a perfect power (a square), and thus also a powerful number.

Its product of digits (3240) is a multiple of the sum of its prime divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 53231616.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2801655 + ... + 2801673.

Almost surely, 2^53231616 is an apocalyptic number.

53231616 is the 7296-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53231616

53231616 is an abundant number, since it is smaller than the sum of its proper divisors (109063335).

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

53231616 is an equidigital number, since it uses as much as digits as its factorization.

53231616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 24 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The cubic root of 53231616 is about 376.1749600720.

The spelling of 53231616 in words is "fifty-three million, two hundred thirty-one thousand, six hundred sixteen".