252975877621 has 4 divisors (see below), whose sum is σ = 256178104000. Its totient is φ = 249773651244.

The previous prime is 252975877579. The next prime is 252975877639. The reversal of 252975877621 is 126778579252.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 252975877621 - 2⁷ = 252975877493 is a prime.

It is a super-3 number, since 3×252975877621³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252975877621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252975874621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1601113071 + ... + 1601113228.

It is an arithmetic number, because the mean of its divisors is an integer number (64044526000).

Almost surely, 2^252975877621 is an apocalyptic number.

It is an amenable number.

252975877621 is a deficient number, since it is larger than the sum of its proper divisors (3202226379).

252975877621 is an equidigital number, since it uses as much as digits as its factorization.

252975877621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202226378.

The product of its digits is 29635200, while the sum is 61.

The spelling of 252975877621 in words is "two hundred fifty-two billion, nine hundred seventy-five million, eight hundred seventy-seven thousand, six hundred twenty-one".