491122553 has 4 divisors (see below), whose sum is σ = 506965248. Its totient is φ = 475279860.

The previous prime is 491122547. The next prime is 491122561. The reversal of 491122553 is 355221194.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 491122553 - 2²⁴ = 474345337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491122523) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7921301 + ... + 7921362.

It is an arithmetic number, because the mean of its divisors is an integer number (126741312).

Almost surely, 2^491122553 is an apocalyptic number.

It is an amenable number.

491122553 is a deficient number, since it is larger than the sum of its proper divisors (15842695).

491122553 is a wasteful number, since it uses less digits than its factorization.

491122553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15842694.

The product of its digits is 10800, while the sum is 32.

The square root of 491122553 is about 22161.2850033566. The cubic root of 491122553 is about 788.9750918879.

The spelling of 491122553 in words is "four hundred ninety-one million, one hundred twenty-two thousand, five hundred fifty-three".