254642651 has 2 divisors, whose sum is σ = 254642652. Its totient is φ = 254642650.

The previous prime is 254642629. The next prime is 254642653. The reversal of 254642651 is 156246452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254642651 is a prime.

Together with 254642653, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_13919336 and since 254642651 and 13919336 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (254642653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127321325 + 127321326.

It is an arithmetic number, because the mean of its divisors is an integer number (127321326).

Almost surely, 2^254642651 is an apocalyptic number.

254642651 is a deficient number, since it is larger than the sum of its proper divisors (1).

254642651 is an equidigital number, since it uses as much as digits as its factorization.

254642651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 35.

The square root of 254642651 is about 15957.5264687232. The cubic root of 254642651 is about 633.8362142305.

The spelling of 254642651 in words is "two hundred fifty-four million, six hundred forty-two thousand, six hundred fifty-one".