252977878 has 4 divisors (see below), whose sum is σ = 379466820. Its totient is φ = 126488938.

The previous prime is 252977861. The next prime is 252977891. The reversal of 252977878 is 878779252.

252977878 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63244468 + ... + 63244471.

It is an arithmetic number, because the mean of its divisors is an integer number (94866705).

Almost surely, 2^252977878 is an apocalyptic number.

252977878 is a deficient number, since it is larger than the sum of its proper divisors (126488942).

252977878 is a wasteful number, since it uses less digits than its factorization.

252977878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126488941.

The product of its digits is 3951360, while the sum is 55.

The square root of 252977878 is about 15905.2783062730. The cubic root of 252977878 is about 632.4519196685.

The spelling of 252977878 in words is "two hundred fifty-two million, nine hundred seventy-seven thousand, eight hundred seventy-eight".