53165508 has 24 divisors (see below), whose sum is σ = 135330720. Its totient is φ = 16110720.

The previous prime is 53165503. The next prime is 53165509. The reversal of 53165508 is 80556135.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (53165503) 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, 201253 + ... + 201516.

It is an arithmetic number, because the mean of its divisors is an integer number (5638780).

Almost surely, 2^53165508 is an apocalyptic number.

It is an amenable number.

53165508 is an abundant number, since it is smaller than the sum of its proper divisors (82165212).

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

53165508 is a wasteful number, since it uses less digits than its factorization.

53165508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402787 (or 402785 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 53165508 is about 7291.4681649171. The cubic root of 53165508 is about 376.0191724794.

It can be divided in two parts, 53 and 165508, that added together give a palindrome (165561).

The spelling of 53165508 in words is "fifty-three million, one hundred sixty-five thousand, five hundred eight".