254704991 has 2 divisors, whose sum is σ = 254704992. Its totient is φ = 254704990.

The previous prime is 254704981. The next prime is 254705027. The reversal of 254704991 is 199407452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 254704991 - 2¹⁸ = 254442847 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254704981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127352495 + 127352496.

It is an arithmetic number, because the mean of its divisors is an integer number (127352496).

Almost surely, 2^254704991 is an apocalyptic number.

254704991 is a deficient number, since it is larger than the sum of its proper divisors (1).

254704991 is an equidigital number, since it uses as much as digits as its factorization.

254704991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 254704991 is about 15959.4796594375. The cubic root of 254704991 is about 633.8879339319.

The spelling of 254704991 in words is "two hundred fifty-four million, seven hundred four thousand, nine hundred ninety-one".