161559146 has 16 divisors (see below), whose sum is σ = 279502080. Its totient is φ = 68603760.

The previous prime is 161559137. The next prime is 161559173. The reversal of 161559146 is 641955161.

It is a super-2 number, since 2×161559146² = 52202715312498632, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51410 + ... + 54461.

It is an arithmetic number, because the mean of its divisors is an integer number (17468880).

Almost surely, 2^161559146 is an apocalyptic number.

161559146 is a deficient number, since it is larger than the sum of its proper divisors (117942934).

161559146 is a wasteful number, since it uses less digits than its factorization.

161559146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105989.

The product of its digits is 32400, while the sum is 38.

The square root of 161559146 is about 12710.5918823633. The cubic root of 161559146 is about 544.6412317681.

The spelling of 161559146 in words is "one hundred sixty-one million, five hundred fifty-nine thousand, one hundred forty-six".