161575882 has 16 divisors (see below), whose sum is σ = 262918152. Its totient is φ = 74027520.

The previous prime is 161575879. The next prime is 161575901. The reversal of 161575882 is 288575161.

161575882 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 62394201 + 99181681 = 7899^2 + 9959^2 .

It is a super-2 number, since 2×161575882² = 52213531288155848, which contains 22 as substring.

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, 19119 + ... + 26242.

Almost surely, 2^161575882 is an apocalyptic number.

161575882 is a deficient number, since it is larger than the sum of its proper divisors (101342270).

161575882 is a wasteful number, since it uses less digits than its factorization.

161575882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45513.

The product of its digits is 134400, while the sum is 43.

The square root of 161575882 is about 12711.2502138853. The cubic root of 161575882 is about 544.6600376794.

The spelling of 161575882 in words is "one hundred sixty-one million, five hundred seventy-five thousand, eight hundred eighty-two".