491323254 has 32 divisors (see below), whose sum is σ = 1017969120. Its totient is φ = 157977600.

The previous prime is 491323241. The next prime is 491323279. The reversal of 491323254 is 452323194.

It is a super-2 number, since 2×491323254² = 482797079842297032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10674 + ... + 33114.

It is an arithmetic number, because the mean of its divisors is an integer number (31811535).

Almost surely, 2^491323254 is an apocalyptic number.

491323254 is an abundant number, since it is smaller than the sum of its proper divisors (526645866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491323254 is a wasteful number, since it uses less digits than its factorization.

491323254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22576.

The product of its digits is 25920, while the sum is 33.

The square root of 491323254 is about 22165.8127304189. The cubic root of 491323254 is about 789.0825508265.

The spelling of 491323254 in words is "four hundred ninety-one million, three hundred twenty-three thousand, two hundred fifty-four".