252520986 has 8 divisors (see below), whose sum is σ = 505041984. Its totient is φ = 84173660.

The previous prime is 252520949. The next prime is 252520993. The reversal of 252520986 is 689025252.

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

252520986 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 21043410 + ... + 21043421.

It is an arithmetic number, because the mean of its divisors is an integer number (63130248).

Almost surely, 2^252520986 is an apocalyptic number.

252520986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

252520986 is a wasteful number, since it uses less digits than its factorization.

252520986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42086836.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 252520986 is about 15890.9089104431. The cubic root of 252520986 is about 632.0709425384.

The spelling of 252520986 in words is "two hundred fifty-two million, five hundred twenty thousand, nine hundred eighty-six".