52981518 has 16 divisors (see below), whose sum is σ = 106727040. Its totient is φ = 17533176.

The previous prime is 52981499. The next prime is 52981531. The reversal of 52981518 is 81518925.

52981518 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30930 + ... + 32597.

It is an arithmetic number, because the mean of its divisors is an integer number (6670440).

Almost surely, 2^52981518 is an apocalyptic number.

52981518 is an abundant number, since it is smaller than the sum of its proper divisors (53745522).

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

52981518 is a wasteful number, since it uses less digits than its factorization.

52981518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63671.

The product of its digits is 28800, while the sum is 39.

The square root of 52981518 is about 7278.8404296289. The cubic root of 52981518 is about 375.5849076582.

The spelling of 52981518 in words is "fifty-two million, nine hundred eighty-one thousand, five hundred eighteen".