161560106 has 4 divisors (see below), whose sum is σ = 242340162. Its totient is φ = 80780052.

The previous prime is 161560067. The next prime is 161560123. The reversal of 161560106 is 601065161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 156475081 + 5085025 = 12509^2 + 2255^2 .

It is a super-2 number, since 2×161560106² = 52203335701462472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40390025 + ... + 40390028.

Almost surely, 2^161560106 is an apocalyptic number.

161560106 is a deficient number, since it is larger than the sum of its proper divisors (80780056).

161560106 is an equidigital number, since it uses as much as digits as its factorization.

161560106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80780055.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 161560106 is about 12710.6296460876. The cubic root of 161560106 is about 544.6423105361.

The spelling of 161560106 in words is "one hundred sixty-one million, five hundred sixty thousand, one hundred six".