52507915 has 4 divisors (see below), whose sum is σ = 63009504. Its totient is φ = 42006328.

The previous prime is 52507907. The next prime is 52507937. The reversal of 52507915 is 51970525.

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

It is a cyclic number.

It is not a de Polignac number, because 52507915 - 2³ = 52507907 is a prime.

It is a super-2 number, since 2×52507915² = 5514162275294450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5250787 + ... + 5250796.

It is an arithmetic number, because the mean of its divisors is an integer number (15752376).

Almost surely, 2^52507915 is an apocalyptic number.

52507915 is a deficient number, since it is larger than the sum of its proper divisors (10501589).

52507915 is a wasteful number, since it uses less digits than its factorization.

52507915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10501588.

The product of its (nonzero) digits is 15750, while the sum is 34.

The square root of 52507915 is about 7246.2345394004. The cubic root of 52507915 is about 374.4624356931.

The spelling of 52507915 in words is "fifty-two million, five hundred seven thousand, nine hundred fifteen".