52518389 has 32 divisors (see below), whose sum is σ = 70730496. Its totient is φ = 37739520.

The previous prime is 52518379. The next prime is 52518443. The reversal of 52518389 is 98381525.

It is not a de Polignac number, because 52518389 - 2⁴ = 52518373 is a prime.

It is a Duffinian 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 (52518359) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68999 + ... + 69755.

It is an arithmetic number, because the mean of its divisors is an integer number (2210328).

Almost surely, 2^52518389 is an apocalyptic number.

It is an amenable number.

52518389 is a deficient number, since it is larger than the sum of its proper divisors (18212107).

52518389 is a wasteful number, since it uses less digits than its factorization.

52518389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845.

The product of its digits is 86400, while the sum is 41.

The square root of 52518389 is about 7246.9572235525. The cubic root of 52518389 is about 374.4873326304.

The spelling of 52518389 in words is "fifty-two million, five hundred eighteen thousand, three hundred eighty-nine".