274520921 has 2 divisors, whose sum is σ = 274520922. Its totient is φ = 274520920.

The previous prime is 274520899. The next prime is 274520933. The reversal of 274520921 is 129025472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 236821321 + 37699600 = 15389^2 + 6140^2 .

It is a cyclic number.

It is not a de Polignac number, because 274520921 - 2¹⁰ = 274519897 is a prime.

It is not a weakly prime, because it can be changed into another prime (274520941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137260460 + 137260461.

It is an arithmetic number, because the mean of its divisors is an integer number (137260461).

Almost surely, 2^274520921 is an apocalyptic number.

It is an amenable number.

274520921 is a deficient number, since it is larger than the sum of its proper divisors (1).

274520921 is an equidigital number, since it uses as much as digits as its factorization.

274520921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 274520921 is about 16568.6728798658. The cubic root of 274520921 is about 649.9178760150.

The spelling of 274520921 in words is "two hundred seventy-four million, five hundred twenty thousand, nine hundred twenty-one".