52815564 has 72 divisors (see below), whose sum is σ = 140690368. Its totient is φ = 17321040.

The previous prime is 52815559. The next prime is 52815589. The reversal of 52815564 is 46551825.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 64719 + ... + 65529.

Almost surely, 2^52815564 is an apocalyptic number.

52815564 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52815564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70345184).

52815564 is an abundant number, since it is smaller than the sum of its proper divisors (87874804).

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

52815564 is a wasteful number, since it uses less digits than its factorization.

52815564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897 (or 883 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 52815564 is about 7267.4317334255. The cubic root of 52815564 is about 375.1923493211.

The spelling of 52815564 in words is "fifty-two million, eight hundred fifteen thousand, five hundred sixty-four".