254904857 has 2 divisors, whose sum is σ = 254904858. Its totient is φ = 254904856.

The previous prime is 254904827. The next prime is 254904889. The reversal of 254904857 is 758409452.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135745801 + 119159056 = 11651^2 + 10916^2 .

It is a cyclic number.

It is not a de Polignac number, because 254904857 - 2²² = 250710553 is a prime.

It is a super-2 number, since 2×254904857² = 129952972244380898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (254904827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127452428 + 127452429.

It is an arithmetic number, because the mean of its divisors is an integer number (127452429).

Almost surely, 2^254904857 is an apocalyptic number.

It is an amenable number.

254904857 is a deficient number, since it is larger than the sum of its proper divisors (1).

254904857 is an equidigital number, since it uses as much as digits as its factorization.

254904857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 44.

The square root of 254904857 is about 15965.7401018556. The cubic root of 254904857 is about 634.0536937014.

The spelling of 254904857 in words is "two hundred fifty-four million, nine hundred four thousand, eight hundred fifty-seven".