5491432591 has 8 divisors (see below), whose sum is σ = 5593325184. Its totient is φ = 5390222040.

The previous prime is 5491432567. The next prime is 5491432601. The reversal of 5491432591 is 1952341945.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5491432591 - 2²⁹ = 4954561679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5491432501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154245 + ... + 186478.

It is an arithmetic number, because the mean of its divisors is an integer number (699165648).

Almost surely, 2^5491432591 is an apocalyptic number.

5491432591 is a deficient number, since it is larger than the sum of its proper divisors (101892593).

5491432591 is a wasteful number, since it uses less digits than its factorization.

5491432591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341021.

The product of its digits is 194400, while the sum is 43.

The square root of 5491432591 is about 74104.2008998140. The cubic root of 5491432591 is about 1764.2571477687.

The spelling of 5491432591 in words is "five billion, four hundred ninety-one million, four hundred thirty-two thousand, five hundred ninety-one".