53312664 has 64 divisors (see below), whose sum is σ = 137456640. Its totient is φ = 17222400.

The previous prime is 53312659. The next prime is 53312683. The reversal of 53312664 is 46621335.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170172 + ... + 170484.

It is an arithmetic number, because the mean of its divisors is an integer number (2147760).

Almost surely, 2^53312664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53312664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68728320).

53312664 is an abundant number, since it is smaller than the sum of its proper divisors (84143976).

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

53312664 is a wasteful number, since it uses less digits than its factorization.

53312664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 516 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

The square root of 53312664 is about 7301.5521637526. The cubic root of 53312664 is about 376.3657788009.

Adding to 53312664 its reverse (46621335), we get a palindrome (99933999).

The spelling of 53312664 in words is "fifty-three million, three hundred twelve thousand, six hundred sixty-four".