161080511 has 2 divisors, whose sum is σ = 161080512. Its totient is φ = 161080510.

The previous prime is 161080481. The next prime is 161080519. The reversal of 161080511 is 115080161.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161080511 - 2¹⁸ = 160818367 is a prime.

It is a super-2 number, since 2×161080511² = 51893862048042242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161080519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80540255 + 80540256.

It is an arithmetic number, because the mean of its divisors is an integer number (80540256).

Almost surely, 2^161080511 is an apocalyptic number.

161080511 is a deficient number, since it is larger than the sum of its proper divisors (1).

161080511 is an equidigital number, since it uses as much as digits as its factorization.

161080511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 23.

The square root of 161080511 is about 12691.7497217681. The cubic root of 161080511 is about 544.1028485167.

The spelling of 161080511 in words is "one hundred sixty-one million, eighty thousand, five hundred eleven".