252220415 has 24 divisors (see below), whose sum is σ = 335538720. Its totient is φ = 181626368.

The previous prime is 252220391. The next prime is 252220417. The reversal of 252220415 is 514022252.

It is not a de Polignac number, because 252220415 - 2⁸ = 252220159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252220417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29441 + ... + 37029.

It is an arithmetic number, because the mean of its divisors is an integer number (13980780).

Almost surely, 2^252220415 is an apocalyptic number.

252220415 is a deficient number, since it is larger than the sum of its proper divisors (83318305).

252220415 is a wasteful number, since it uses less digits than its factorization.

252220415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7651 (or 7634 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 252220415 is about 15881.4487689253. The cubic root of 252220415 is about 631.8200622379.

Adding to 252220415 its reverse (514022252), we get a palindrome (766242667).

The spelling of 252220415 in words is "two hundred fifty-two million, two hundred twenty thousand, four hundred fifteen".