162161572 has 12 divisors (see below), whose sum is σ = 300475980. Its totient is φ = 76311296.

The previous prime is 162161567. The next prime is 162161579. The reversal of 162161572 is 275161261.

It can be written as a sum of positive squares in 2 ways, for example, as 47114496 + 115047076 = 6864^2 + 10726^2 .

It is a super-2 number, since 2×162161572² = 52592750867022368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (162161579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1192297 + ... + 1192432.

It is an arithmetic number, because the mean of its divisors is an integer number (25039665).

Almost surely, 2^162161572 is an apocalyptic number.

It is an amenable number.

162161572 is a deficient number, since it is larger than the sum of its proper divisors (138314408).

162161572 is a wasteful number, since it uses less digits than its factorization.

162161572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2384750 (or 2384748 counting only the distinct ones).

The product of its digits is 5040, while the sum is 31.

The square root of 162161572 is about 12734.2676271547. The cubic root of 162161572 is about 545.3173496125.

The spelling of 162161572 in words is "one hundred sixty-two million, one hundred sixty-one thousand, five hundred seventy-two".