52439915 has 32 divisors (see below), whose sum is σ = 71672256. Its totient is φ = 36495360.

The previous prime is 52439911. The next prime is 52439927. The reversal of 52439915 is 51993425.

It is not a de Polignac number, because 52439915 - 2² = 52439911 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (52439911) 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, 148379 + ... + 148731.

It is an arithmetic number, because the mean of its divisors is an integer number (2239758).

Almost surely, 2^52439915 is an apocalyptic number.

52439915 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

52439915 is a deficient number, since it is larger than the sum of its proper divisors (19232341).

52439915 is a wasteful number, since it uses less digits than its factorization.

52439915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479.

The product of its digits is 48600, while the sum is 38.

The square root of 52439915 is about 7241.5409271784. The cubic root of 52439915 is about 374.3007175621.

The spelling of 52439915 in words is "fifty-two million, four hundred thirty-nine thousand, nine hundred fifteen".