161306059 has 12 divisors (see below), whose sum is σ = 165718800. Its totient is φ = 157001360.

The previous prime is 161306027. The next prime is 161306063. The reversal of 161306059 is 950603161.

It is not a de Polignac number, because 161306059 - 2⁵ = 161306027 is a prime.

It is a super-2 number, since 2×161306059² = 52039289340222962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161306059.

It is not an unprimeable number, because it can be changed into a prime (161306069) 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, 518514 + ... + 518824.

It is an arithmetic number, because the mean of its divisors is an integer number (13809900).

Almost surely, 2^161306059 is an apocalyptic number.

161306059 is a deficient number, since it is larger than the sum of its proper divisors (4412741).

161306059 is an equidigital number, since it uses as much as digits as its factorization.

161306059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 161306059 is about 12700.6322283578. The cubic root of 161306059 is about 544.3566844693.

The spelling of 161306059 in words is "one hundred sixty-one million, three hundred six thousand, fifty-nine".