254816491 has 2 divisors, whose sum is σ = 254816492. Its totient is φ = 254816490.

The previous prime is 254816431. The next prime is 254816537. The reversal of 254816491 is 194618452.

254816491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 254816491 - 2¹³ = 254808299 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (254816431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127408245 + 127408246.

It is an arithmetic number, because the mean of its divisors is an integer number (127408246).

Almost surely, 2^254816491 is an apocalyptic number.

254816491 is a deficient number, since it is larger than the sum of its proper divisors (1).

254816491 is an equidigital number, since it uses as much as digits as its factorization.

254816491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 40.

The square root of 254816491 is about 15962.9724988800. The cubic root of 254816491 is about 633.9804176499.

The spelling of 254816491 in words is "two hundred fifty-four million, eight hundred sixteen thousand, four hundred ninety-one".