921275156 has 12 divisors (see below), whose sum is σ = 1612490292. Its totient is φ = 460563648.

The previous prime is 921275149. The next prime is 921275167. The reversal of 921275156 is 651572129.

It is a happy number.

921275156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 292068100 + 629207056 = 17090^2 + 25084^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17216 + ... + 46248.

It is an arithmetic number, because the mean of its divisors is an integer number (134374191).

Almost surely, 2^921275156 is an apocalyptic number.

It is an amenable number.

921275156 is a deficient number, since it is larger than the sum of its proper divisors (691215136).

921275156 is a wasteful number, since it uses less digits than its factorization.

921275156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36970 (or 36968 counting only the distinct ones).

The product of its digits is 37800, while the sum is 38.

The square root of 921275156 is about 30352.5148216750. The cubic root of 921275156 is about 973.0379674973.

The spelling of 921275156 in words is "nine hundred twenty-one million, two hundred seventy-five thousand, one hundred fifty-six".