275936921 has 16 divisors (see below), whose sum is σ = 312560640. Its totient is φ = 241824960.

The previous prime is 275936917. The next prime is 275936933. The reversal of 275936921 is 129639572.

It is not a de Polignac number, because 275936921 - 2² = 275936917 is a prime.

It is a super-2 number, since 2×275936921² = 152282368741920482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275936971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14900 + ... + 27818.

It is an arithmetic number, because the mean of its divisors is an integer number (19535040).

Almost surely, 2^275936921 is an apocalyptic number.

It is an amenable number.

275936921 is a deficient number, since it is larger than the sum of its proper divisors (36623719).

275936921 is a wasteful number, since it uses less digits than its factorization.

275936921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13016.

The product of its digits is 204120, while the sum is 44.

The square root of 275936921 is about 16611.3491625455. The cubic root of 275936921 is about 651.0334023287.

The spelling of 275936921 in words is "two hundred seventy-five million, nine hundred thirty-six thousand, nine hundred twenty-one".