52351515 has 20 divisors (see below), whose sum is σ = 93845664. Its totient is φ = 27920592.

The previous prime is 52351513. The next prime is 52351531. The reversal of 52351515 is 51515325.

It is not a de Polignac number, because 52351515 - 2¹ = 52351513 is a prime.

It is a super-2 number, since 2×52351515² = 5481362245590450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (52351513) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 64227 + ... + 65036.

Almost surely, 2^52351515 is an apocalyptic number.

52351515 is a deficient number, since it is larger than the sum of its proper divisors (41494149).

52351515 is a wasteful number, since it uses less digits than its factorization.

52351515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129280 (or 129271 counting only the distinct ones).

The product of its digits is 3750, while the sum is 27.

The square root of 52351515 is about 7235.4346794094. The cubic root of 52351515 is about 374.0902748517.

The spelling of 52351515 in words is "fifty-two million, three hundred fifty-one thousand, five hundred fifteen".