52515251 has 16 divisors (see below), whose sum is σ = 55144800. Its totient is φ = 49978368.

The previous prime is 52515217. The next prime is 52515263. The reversal of 52515251 is 15251525.

It is a cyclic number.

It is not a de Polignac number, because 52515251 - 2¹⁴ = 52498867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52515251.

It is not an unprimeable number, because it can be changed into a prime (52515851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383255 + ... + 383391.

It is an arithmetic number, because the mean of its divisors is an integer number (3446550).

Almost surely, 2^52515251 is an apocalyptic number.

52515251 is a deficient number, since it is larger than the sum of its proper divisors (2629549).

52515251 is a wasteful number, since it uses less digits than its factorization.

52515251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358.

The product of its digits is 2500, while the sum is 26.

The square root of 52515251 is about 7246.7407156597. The cubic root of 52515251 is about 374.4798738800.

Adding to 52515251 its reverse (15251525), we get a palindrome (67766776).

The spelling of 52515251 in words is "fifty-two million, five hundred fifteen thousand, two hundred fifty-one".