252581878 has 8 divisors (see below), whose sum is σ = 379906272. Its totient is φ = 125946456.

The previous prime is 252581867. The next prime is 252581899. The reversal of 252581878 is 878185252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

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 in 3 ways as a sum of consecutive naturals, for example, 171325 + ... + 172792.

It is an arithmetic number, because the mean of its divisors is an integer number (47488284).

Almost surely, 2^252581878 is an apocalyptic number.

252581878 is a deficient number, since it is larger than the sum of its proper divisors (127324394).

252581878 is a wasteful number, since it uses less digits than its factorization.

252581878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344486.

The product of its digits is 358400, while the sum is 46.

The square root of 252581878 is about 15892.8247331933. The cubic root of 252581878 is about 632.1217435579.

The spelling of 252581878 in words is "two hundred fifty-two million, five hundred eighty-one thousand, eight hundred seventy-eight".