170880491 has 2 divisors, whose sum is σ = 170880492. Its totient is φ = 170880490.

The previous prime is 170880473. The next prime is 170880503. The reversal of 170880491 is 194088071.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 170880491 - 2²⁶ = 103771627 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (170880421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85440245 + 85440246.

It is an arithmetic number, because the mean of its divisors is an integer number (85440246).

Almost surely, 2^170880491 is an apocalyptic number.

170880491 is a deficient number, since it is larger than the sum of its proper divisors (1).

170880491 is an equidigital number, since it uses as much as digits as its factorization.

170880491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 170880491 is about 13072.1264911261. The cubic root of 170880491 is about 554.9205751667.

The spelling of 170880491 in words is "one hundred seventy million, eight hundred eighty thousand, four hundred ninety-one".