254764021 has 2 divisors, whose sum is σ = 254764022. Its totient is φ = 254764020.

The previous prime is 254764009. The next prime is 254764039. The reversal of 254764021 is 120467452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160402225 + 94361796 = 12665^2 + 9714^2 .

It is a cyclic number.

It is not a de Polignac number, because 254764021 - 2¹⁷ = 254632949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254764061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127382010 + 127382011.

It is an arithmetic number, because the mean of its divisors is an integer number (127382011).

Almost surely, 2^254764021 is an apocalyptic number.

It is an amenable number.

254764021 is a deficient number, since it is larger than the sum of its proper divisors (1).

254764021 is an equidigital number, since it uses as much as digits as its factorization.

254764021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 254764021 is about 15961.3289233698. The cubic root of 254764021 is about 633.9368997495.

The spelling of 254764021 in words is "two hundred fifty-four million, seven hundred sixty-four thousand, twenty-one".