161512 has 16 divisors (see below), whose sum is σ = 326340. Its totient is φ = 74496.

The previous prime is 161507. The next prime is 161521. The reversal of 161512 is 215161.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 133956 + 27556 = 366^2 + 166^2 .

It is a super-2 number, since 2×161512² = 52172252288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 673 + ... + 880.

2¹⁶¹⁵¹² is an apocalyptic number.

It is an amenable number.

161512 is an abundant number, since it is smaller than the sum of its proper divisors (164828).

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

161512 is a wasteful number, since it uses less digits than its factorization.

161512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572 (or 1568 counting only the distinct ones).

The product of its digits is 60, while the sum is 16.

The square root of 161512 is about 401.8855558489. The cubic root of 161512 is about 54.4588247759.

Adding to 161512 its reverse (215161), we get a palindrome (376673).

The spelling of 161512 in words is "one hundred sixty-one thousand, five hundred twelve".