254500391 has 2 divisors, whose sum is σ = 254500392. Its totient is φ = 254500390.

The previous prime is 254500373. The next prime is 254500403. The reversal of 254500391 is 193005452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 254500391 - 2²² = 250306087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254500361) 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, 127250195 + 127250196.

It is an arithmetic number, because the mean of its divisors is an integer number (127250196).

Almost surely, 2^254500391 is an apocalyptic number.

254500391 is a deficient number, since it is larger than the sum of its proper divisors (1).

254500391 is an equidigital number, since it uses as much as digits as its factorization.

254500391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 254500391 is about 15953.0683882443. The cubic root of 254500391 is about 633.7181581544.

The spelling of 254500391 in words is "two hundred fifty-four million, five hundred thousand, three hundred ninety-one".