275342921 has 8 divisors (see below), whose sum is σ = 322353024. Its totient is φ = 230251680.

The previous prime is 275342833. The next prime is 275342953. The reversal of 275342921 is 129243572.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 275342921 - 2¹⁰ = 275341897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (275342981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 479405 + ... + 479978.

It is an arithmetic number, because the mean of its divisors is an integer number (40294128).

Almost surely, 2^275342921 is an apocalyptic number.

It is an amenable number.

275342921 is a deficient number, since it is larger than the sum of its proper divisors (47010103).

275342921 is an equidigital number, since it uses as much as digits as its factorization.

275342921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959431.

The product of its digits is 30240, while the sum is 35.

The square root of 275342921 is about 16593.4601876763. The cubic root of 275342921 is about 650.5659142515.

The spelling of 275342921 in words is "two hundred seventy-five million, three hundred forty-two thousand, nine hundred twenty-one".