254640499 has 2 divisors, whose sum is σ = 254640500. Its totient is φ = 254640498.

The previous prime is 254640487. The next prime is 254640509. The reversal of 254640499 is 994046452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 254640499 - 2⁷ = 254640371 is a prime.

It is not a weakly prime, because it can be changed into another prime (254640409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127320249 + 127320250.

It is an arithmetic number, because the mean of its divisors is an integer number (127320250).

Almost surely, 2^254640499 is an apocalyptic number.

254640499 is a deficient number, since it is larger than the sum of its proper divisors (1).

254640499 is an equidigital number, since it uses as much as digits as its factorization.

254640499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 254640499 is about 15957.4590395840. The cubic root of 254640499 is about 633.8344286965.

The spelling of 254640499 in words is "two hundred fifty-four million, six hundred forty thousand, four hundred ninety-nine".