53173872 has 30 divisors (see below), whose sum is σ = 148813392. Its totient is φ = 17724576.

The previous prime is 53173871. The next prime is 53173877. The reversal of 53173872 is 27837135.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53173871) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 184488 + ... + 184775.

Almost surely, 2^53173872 is an apocalyptic number.

It is an amenable number.

53173872 is an abundant number, since it is smaller than the sum of its proper divisors (95639520).

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

53173872 is a wasteful number, since it uses less digits than its factorization.

53173872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369277 (or 369268 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 53173872 is about 7292.0416894036. The cubic root of 53173872 is about 376.0388898963.

It can be divided in two parts, 53173 and 872, that added together give a palindrome (54045).

The spelling of 53173872 in words is "fifty-three million, one hundred seventy-three thousand, eight hundred seventy-two".