275482921 has 4 divisors (see below), whose sum is σ = 314837632. Its totient is φ = 236128212.

The previous prime is 275482903. The next prime is 275482927. The reversal of 275482921 is 129284572.

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 a cyclic number.

It is not a de Polignac number, because 275482921 - 2⁷ = 275482793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275482927) 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, 19677345 + ... + 19677358.

It is an arithmetic number, because the mean of its divisors is an integer number (78709408).

Almost surely, 2^275482921 is an apocalyptic number.

It is an amenable number.

275482921 is a deficient number, since it is larger than the sum of its proper divisors (39354711).

275482921 is an equidigital number, since it uses as much as digits as its factorization.

275482921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39354710.

The product of its digits is 80640, while the sum is 40.

The square root of 275482921 is about 16597.6781809987. The cubic root of 275482921 is about 650.6761571387.

The spelling of 275482921 in words is "two hundred seventy-five million, four hundred eighty-two thousand, nine hundred twenty-one".