173116491 has 12 divisors (see below), whose sum is σ = 245199672. Its totient is φ = 108621568.

The previous prime is 173116483. The next prime is 173116501. The reversal of 173116491 is 194611371.

It is not a de Polignac number, because 173116491 - 2³ = 173116483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (173116441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98970 + ... + 100703.

It is an arithmetic number, because the mean of its divisors is an integer number (20433306).

Almost surely, 2^173116491 is an apocalyptic number.

173116491 is a deficient number, since it is larger than the sum of its proper divisors (72083181).

173116491 is a wasteful number, since it uses less digits than its factorization.

173116491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199710 (or 199693 counting only the distinct ones).

The product of its digits is 4536, while the sum is 33.

The square root of 173116491 is about 13157.3740161173. The cubic root of 173116491 is about 557.3305038168.

The spelling of 173116491 in words is "one hundred seventy-three million, one hundred sixteen thousand, four hundred ninety-one".