274921 has 4 divisors (see below), whose sum is σ = 278100. Its totient is φ = 271744.

The previous prime is 274909. The next prime is 274931. The reversal of 274921 is 129472.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 160000 + 114921 = 400^2 + 339^2 .

It is a cyclic number.

It is not a de Polignac number, because 274921 - 2⁵ = 274889 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (274931) 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, 1456 + ... + 1633.

It is an arithmetic number, because the mean of its divisors is an integer number (69525).

2²⁷⁴⁹²¹ is an apocalyptic number.

It is an amenable number.

274921 is a deficient number, since it is larger than the sum of its proper divisors (3179).

274921 is an equidigital number, since it uses as much as digits as its factorization.

274921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178.

The product of its digits is 1008, while the sum is 25.

The square root of 274921 is about 524.3290951301. The cubic root of 274921 is about 65.0233446720.

The spelling of 274921 in words is "two hundred seventy-four thousand, nine hundred twenty-one".