252981965 has 8 divisors (see below), whose sum is σ = 310037760. Its totient is φ = 198079312.

The previous prime is 252981961. The next prime is 252981977. The reversal of 252981965 is 569189252.

252981965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 252981965 - 2² = 252981961 is a prime.

It is a super-2 number, since 2×252981965² = 127999749230522450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252981961) 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, 538025 + ... + 538494.

It is an arithmetic number, because the mean of its divisors is an integer number (38754720).

Almost surely, 2^252981965 is an apocalyptic number.

It is an amenable number.

252981965 is a deficient number, since it is larger than the sum of its proper divisors (57055795).

252981965 is a wasteful number, since it uses less digits than its factorization.

252981965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076571.

The product of its digits is 388800, while the sum is 47.

The square root of 252981965 is about 15905.4067851156. The cubic root of 252981965 is about 632.4553255224.

The spelling of 252981965 in words is "two hundred fifty-two million, nine hundred eighty-one thousand, nine hundred sixty-five".