252146878 has 4 divisors (see below), whose sum is σ = 378220320. Its totient is φ = 126073438.

The previous prime is 252146857. The next prime is 252146911. The reversal of 252146878 is 878641252.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 63036718 + ... + 63036721.

It is an arithmetic number, because the mean of its divisors is an integer number (94555080).

Almost surely, 2^252146878 is an apocalyptic number.

252146878 is a deficient number, since it is larger than the sum of its proper divisors (126073442).

252146878 is a wasteful number, since it uses less digits than its factorization.

252146878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126073441.

The product of its digits is 215040, while the sum is 43.

The square root of 252146878 is about 15879.1334146420. The cubic root of 252146878 is about 631.7586521043.

The spelling of 252146878 in words is "two hundred fifty-two million, one hundred forty-six thousand, eight hundred seventy-eight".