252805558 has 16 divisors (see below), whose sum is σ = 408462336. Its totient is φ = 117006120.

The previous prime is 252805547. The next prime is 252805591. The reversal of 252805558 is 855508252.

It is a happy number.

It is a super-3 number, since 3×252805558³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 252805558.

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 in 7 ways as a sum of consecutive naturals, for example, 87216 + ... + 90067.

It is an arithmetic number, because the mean of its divisors is an integer number (25528896).

Almost surely, 2^252805558 is an apocalyptic number.

252805558 is a deficient number, since it is larger than the sum of its proper divisors (155656778).

252805558 is a wasteful number, since it uses less digits than its factorization.

252805558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177339.

The product of its (nonzero) digits is 160000, while the sum is 40.

The square root of 252805558 is about 15899.8603138518. The cubic root of 252805558 is about 632.3082854102.

The spelling of 252805558 in words is "two hundred fifty-two million, eight hundred five thousand, five hundred fifty-eight".