161587112 has 8 divisors (see below), whose sum is σ = 302975850. Its totient is φ = 80793552.

The previous prime is 161587093. The next prime is 161587123. The reversal of 161587112 is 211785161.

161587112 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., 131928196 + 29658916 = 11486^2 + 5446^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×161587112² = 52220789529001088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10099187 + ... + 10099202.

Almost surely, 2^161587112 is an apocalyptic number.

It is an amenable number.

161587112 is a deficient number, since it is larger than the sum of its proper divisors (141388738).

161587112 is a wasteful number, since it uses less digits than its factorization.

161587112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20198395 (or 20198391 counting only the distinct ones).

The product of its digits is 3360, while the sum is 32.

The square root of 161587112 is about 12711.6919408865. The cubic root of 161587112 is about 544.6726558797.

The spelling of 161587112 in words is "one hundred sixty-one million, five hundred eighty-seven thousand, one hundred twelve".