161745576 has 32 divisors (see below), whose sum is σ = 404732160. Its totient is φ = 53866112.

The previous prime is 161745539. The next prime is 161745581. The reversal of 161745576 is 675547161.

161745576 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 32041 + ... + 36743.

It is an arithmetic number, because the mean of its divisors is an integer number (12647880).

Almost surely, 2^161745576 is an apocalyptic number.

It is an amenable number.

161745576 is an abundant number, since it is smaller than the sum of its proper divisors (242986584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161745576 is a wasteful number, since it uses less digits than its factorization.

161745576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6145 (or 6141 counting only the distinct ones).

The product of its digits is 176400, while the sum is 42.

The square root of 161745576 is about 12717.9234154008. The cubic root of 161745576 is about 544.8506461657.

The spelling of 161745576 in words is "one hundred sixty-one million, seven hundred forty-five thousand, five hundred seventy-six".