52399615 has 4 divisors (see below), whose sum is σ = 62879544. Its totient is φ = 41919688.

The previous prime is 52399609. The next prime is 52399621. The reversal of 52399615 is 51699325.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (52399609) and next prime (52399621).

It is a cyclic number.

It is not a de Polignac number, because 52399615 - 2⁵ = 52399583 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5239957 + ... + 5239966.

It is an arithmetic number, because the mean of its divisors is an integer number (15719886).

Almost surely, 2^52399615 is an apocalyptic number.

52399615 is a deficient number, since it is larger than the sum of its proper divisors (10479929).

52399615 is a wasteful number, since it uses less digits than its factorization.

52399615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10479928.

The product of its digits is 72900, while the sum is 40.

The square root of 52399615 is about 7238.7578354301. The cubic root of 52399615 is about 374.2048098001.

The spelling of 52399615 in words is "fifty-two million, three hundred ninety-nine thousand, six hundred fifteen".