5571173491 has 8 divisors (see below), whose sum is σ = 6001236864. Its totient is φ = 5141326080.

The previous prime is 5571173473. The next prime is 5571173507. The reversal of 5571173491 is 1943711755.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5571173491 is a prime.

It is a super-2 number, since 2×5571173491² = 62075948133642254162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5571173431) 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, 1731 + ... + 105571.

It is an arithmetic number, because the mean of its divisors is an integer number (750154608).

Almost surely, 2^5571173491 is an apocalyptic number.

5571173491 is a deficient number, since it is larger than the sum of its proper divisors (430063373).

5571173491 is a wasteful number, since it uses less digits than its factorization.

5571173491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107981.

The product of its digits is 132300, while the sum is 43.

The square root of 5571173491 is about 74640.2940173738. The cubic root of 5571173491 is about 1772.7557158006.

The spelling of 5571173491 in words is "five billion, five hundred seventy-one million, one hundred seventy-three thousand, four hundred ninety-one".