254729491 has 4 divisors (see below), whose sum is σ = 259047000. Its totient is φ = 250411984.

The previous prime is 254729483. The next prime is 254729521. The reversal of 254729491 is 194927452.

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 254729491 - 2³ = 254729483 is a prime.

It is a super-2 number, since 2×254729491² = 129774227170238162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (254729401) 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 in 3 ways as a sum of consecutive naturals, for example, 2158666 + ... + 2158783.

It is an arithmetic number, because the mean of its divisors is an integer number (64761750).

Almost surely, 2^254729491 is an apocalyptic number.

254729491 is a deficient number, since it is larger than the sum of its proper divisors (4317509).

254729491 is an equidigital number, since it uses as much as digits as its factorization.

254729491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4317508.

The product of its digits is 181440, while the sum is 43.

The square root of 254729491 is about 15960.2472098649. The cubic root of 254729491 is about 633.9082577797.

The spelling of 254729491 in words is "two hundred fifty-four million, seven hundred twenty-nine thousand, four hundred ninety-one".