161597548 has 24 divisors (see below), whose sum is σ = 325187072. Its totient is φ = 68829264.

The previous prime is 161597543. The next prime is 161597573. The reversal of 161597548 is 845795161.

It is a super-2 number, since 2×161597548² = 52227535039224608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161597498 and 161597507.

It is not an unprimeable number, because it can be changed into a prime (161597543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13140 + ... + 22267.

Almost surely, 2^161597548 is an apocalyptic number.

It is an amenable number.

161597548 is an abundant number, since it is smaller than the sum of its proper divisors (163589524).

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

161597548 is a wasteful number, since it uses less digits than its factorization.

161597548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35581 (or 35579 counting only the distinct ones).

The product of its digits is 302400, while the sum is 46.

The square root of 161597548 is about 12712.1024224949. The cubic root of 161597548 is about 544.6843814053.

The spelling of 161597548 in words is "one hundred sixty-one million, five hundred ninety-seven thousand, five hundred forty-eight".