975276921 has 4 divisors (see below), whose sum is σ = 1300369232. Its totient is φ = 650184612.

The previous prime is 975276917. The next prime is 975276923. The reversal of 975276921 is 129672579.

975276921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 975276921 - 2² = 975276917 is a prime.

It is a super-3 number, since 3×975276921³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (975276923) 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, 162546151 + ... + 162546156.

It is an arithmetic number, because the mean of its divisors is an integer number (325092308).

Almost surely, 2^975276921 is an apocalyptic number.

It is an amenable number.

975276921 is a deficient number, since it is larger than the sum of its proper divisors (325092311).

975276921 is a wasteful number, since it uses less digits than its factorization.

975276921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325092310.

The product of its digits is 476280, while the sum is 48.

The square root of 975276921 is about 31229.4239620266. The cubic root of 975276921 is about 991.6901106840.

The spelling of 975276921 in words is "nine hundred seventy-five million, two hundred seventy-six thousand, nine hundred twenty-one".