274556221 has 4 divisors (see below), whose sum is σ = 286493472. Its totient is φ = 262618972.

The previous prime is 274556209. The next prime is 274556237. The reversal of 274556221 is 122655472.

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 274556221 - 2¹¹ = 274554173 is a prime.

It is a super-2 number, since 2×274556221² = 150762236979601682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274556201) 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, 5968591 + ... + 5968636.

It is an arithmetic number, because the mean of its divisors is an integer number (71623368).

Almost surely, 2^274556221 is an apocalyptic number.

It is an amenable number.

274556221 is a deficient number, since it is larger than the sum of its proper divisors (11937251).

274556221 is a wasteful number, since it uses less digits than its factorization.

274556221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11937250.

The product of its digits is 33600, while the sum is 34.

The square root of 274556221 is about 16569.7381089744. The cubic root of 274556221 is about 649.9457319585.

The spelling of 274556221 in words is "two hundred seventy-four million, five hundred fifty-six thousand, two hundred twenty-one".