162561322 has 36 divisors (see below), whose sum is σ = 311806530. Its totient is φ = 63330960.

The previous prime is 162561319. The next prime is 162561341. The reversal of 162561322 is 223165261.

162561322 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 only one way, i.e., 111281401 + 51279921 = 10549^2 + 7161^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5004 + ... + 18712.

Almost surely, 2^162561322 is an apocalyptic number.

162561322 is a deficient number, since it is larger than the sum of its proper divisors (149245208).

162561322 is a wasteful number, since it uses less digits than its factorization.

162561322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13747 (or 13729 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 162561322 is about 12749.9538038379. The cubic root of 162561322 is about 545.7650753537.

It can be divided in two parts, 16256 and 1322, that added together give a triangular number (17578 = T₁₈₇).

The spelling of 162561322 in words is "one hundred sixty-two million, five hundred sixty-one thousand, three hundred twenty-two".