957125921 has 2 divisors, whose sum is σ = 957125922. Its totient is φ = 957125920.

The previous prime is 957125909. The next prime is 957125987. The reversal of 957125921 is 129521759.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 956046400 + 1079521 = 30920^2 + 1039^2 .

It is a cyclic number.

It is not a de Polignac number, because 957125921 - 2¹⁰ = 957124897 is a prime.

It is equal to p_48776054 and since 957125921 and 48776054 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (957125821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 478562960 + 478562961.

It is an arithmetic number, because the mean of its divisors is an integer number (478562961).

Almost surely, 2^957125921 is an apocalyptic number.

It is an amenable number.

957125921 is a deficient number, since it is larger than the sum of its proper divisors (1).

957125921 is an equidigital number, since it uses as much as digits as its factorization.

957125921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56700, while the sum is 41.

The square root of 957125921 is about 30937.4517534977. The cubic root of 957125921 is about 985.4993889493.

The spelling of 957125921 in words is "nine hundred fifty-seven million, one hundred twenty-five thousand, nine hundred twenty-one".