52389918 has 36 divisors (see below), whose sum is σ = 132046200. Its totient is φ = 14968296.

The previous prime is 52389893. The next prime is 52389919. The reversal of 52389918 is 81998325.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52389919) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 28818 + ... + 30581.

It is an arithmetic number, because the mean of its divisors is an integer number (3667950).

Almost surely, 2^52389918 is an apocalyptic number.

52389918 is an abundant number, since it is smaller than the sum of its proper divisors (79656282).

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

52389918 is a wasteful number, since it uses less digits than its factorization.

52389918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59421 (or 59411 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 52389918 is about 7238.0880072019. The cubic root of 52389918 is about 374.1817251019.

The spelling of 52389918 in words is "fifty-two million, three hundred eighty-nine thousand, nine hundred eighteen".