252521982 has 16 divisors (see below), whose sum is σ = 561160080. Its totient is φ = 84173976.

The previous prime is 252521977. The next prime is 252521987. The reversal of 252521982 is 289125252.

252521982 is a `hidden beast` number, since 2 + 52 + 521 + 9 + 82 = 666.

It is an interprime number because it is at equal distance from previous prime (252521977) and next prime (252521987).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252521987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2338113 + ... + 2338220.

It is an arithmetic number, because the mean of its divisors is an integer number (35072505).

Almost surely, 2^252521982 is an apocalyptic number.

252521982 is an abundant number, since it is smaller than the sum of its proper divisors (308638098).

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

252521982 is a wasteful number, since it uses less digits than its factorization.

252521982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4676344 (or 4676338 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 252521982 is about 15890.9402490853. The cubic root of 252521982 is about 632.0717735477.

The spelling of 252521982 in words is "two hundred fifty-two million, five hundred twenty-one thousand, nine hundred eighty-two".