161390059 has 2 divisors, whose sum is σ = 161390060. Its totient is φ = 161390058.

The previous prime is 161389961. The next prime is 161390077. The reversal of 161390059 is 950093161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161390059 - 2²⁷ = 27172331 is a prime.

It is a super-2 number, since 2×161390059² = 52093502288046962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (161391059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80695029 + 80695030.

It is an arithmetic number, because the mean of its divisors is an integer number (80695030).

Almost surely, 2^161390059 is an apocalyptic number.

161390059 is a deficient number, since it is larger than the sum of its proper divisors (1).

161390059 is an equidigital number, since it uses as much as digits as its factorization.

161390059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 161390059 is about 12703.9387199404. The cubic root of 161390059 is about 544.4511591734.

The spelling of 161390059 in words is "one hundred sixty-one million, three hundred ninety thousand, fifty-nine".