254012491 has 2 divisors, whose sum is σ = 254012492. Its totient is φ = 254012490.

The previous prime is 254012489. The next prime is 254012531. The reversal of 254012491 is 194210452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 254012491 - 2¹ = 254012489 is a prime.

Together with 254012489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (254012441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127006245 + 127006246.

It is an arithmetic number, because the mean of its divisors is an integer number (127006246).

Almost surely, 2^254012491 is an apocalyptic number.

254012491 is a deficient number, since it is larger than the sum of its proper divisors (1).

254012491 is an equidigital number, since it uses as much as digits as its factorization.

254012491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 254012491 is about 15937.7693232146. The cubic root of 254012491 is about 633.3129343076.

The spelling of 254012491 in words is "two hundred fifty-four million, twelve thousand, four hundred ninety-one".