957421081 has 4 divisors (see below), whose sum is σ = 988305664. Its totient is φ = 926536500.

The previous prime is 957421043. The next prime is 957421163. The reversal of 957421081 is 180124759.

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 957421081 - 2⁷ = 957420953 is a prime.

It is a super-2 number, since 2×957421081² = 1833310252686417122, which contains 22 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 957421081.

It is not an unprimeable number, because it can be changed into a prime (957421981) 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, 15442245 + ... + 15442306.

It is an arithmetic number, because the mean of its divisors is an integer number (247076416).

Almost surely, 2^957421081 is an apocalyptic number.

957421081 is the 17865-th hex number.

It is an amenable number.

957421081 is a deficient number, since it is larger than the sum of its proper divisors (30884583).

957421081 is a wasteful number, since it uses less digits than its factorization.

957421081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30884582.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 957421081 is about 30942.2216558540. The cubic root of 957421081 is about 985.6006818227.

The spelling of 957421081 in words is "nine hundred fifty-seven million, four hundred twenty-one thousand, eighty-one".