254045491 has 4 divisors (see below), whose sum is σ = 290337712. Its totient is φ = 217753272.

The previous prime is 254045489. The next prime is 254045497. The reversal of 254045491 is 194540452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 254045491 - 2¹ = 254045489 is a prime.

It is a super-2 number, since 2×254045491² = 129078222994862162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (254045497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18146100 + ... + 18146113.

It is an arithmetic number, because the mean of its divisors is an integer number (72584428).

Almost surely, 2^254045491 is an apocalyptic number.

254045491 is a deficient number, since it is larger than the sum of its proper divisors (36292221).

254045491 is an equidigital number, since it uses as much as digits as its factorization.

254045491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36292220.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 254045491 is about 15938.8045662151. The cubic root of 254045491 is about 633.3403587094.

The spelling of 254045491 in words is "two hundred fifty-four million, forty-five thousand, four hundred ninety-one".