161082917 has 2 divisors, whose sum is σ = 161082918. Its totient is φ = 161082916.

The previous prime is 161082853. The next prime is 161082923. The reversal of 161082917 is 719280161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92756161 + 68326756 = 9631^2 + 8266^2 .

It is a cyclic number.

It is not a de Polignac number, because 161082917 - 2⁶ = 161082853 is a prime.

It is a super-2 number, since 2×161082917² = 51895412298457778, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161082937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80541458 + 80541459.

It is an arithmetic number, because the mean of its divisors is an integer number (80541459).

Almost surely, 2^161082917 is an apocalyptic number.

It is an amenable number.

161082917 is a deficient number, since it is larger than the sum of its proper divisors (1).

161082917 is an equidigital number, since it uses as much as digits as its factorization.

161082917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 35.

The square root of 161082917 is about 12691.8445073992. The cubic root of 161082917 is about 544.1055575242.

The spelling of 161082917 in words is "one hundred sixty-one million, eighty-two thousand, nine hundred seventeen".