53155564 has 24 divisors (see below), whose sum is σ = 115976448. Its totient is φ = 20709840.

The previous prime is 53155561. The next prime is 53155573. The reversal of 53155564 is 46555135.

It is not an unprimeable number, because it can be changed into a prime (53155561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85984 + ... + 86599.

It is an arithmetic number, because the mean of its divisors is an integer number (4832352).

Almost surely, 2^53155564 is an apocalyptic number.

It is an amenable number.

53155564 is an abundant number, since it is smaller than the sum of its proper divisors (62820884).

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

53155564 is a wasteful number, since it uses less digits than its factorization.

53155564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172605 (or 172603 counting only the distinct ones).

The product of its digits is 45000, while the sum is 34.

The square root of 53155564 is about 7290.7862401801. The cubic root of 53155564 is about 375.9957276563.

The spelling of 53155564 in words is "fifty-three million, one hundred fifty-five thousand, five hundred sixty-four".