161053112 has 32 divisors (see below), whose sum is σ = 331553520. Its totient is φ = 72733440.

The previous prime is 161053097. The next prime is 161053141. The reversal of 161053112 is 211350161.

It is a congruent number.

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, 7988 + ... + 19644.

Almost surely, 2^161053112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161053112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165776760).

161053112 is an abundant number, since it is smaller than the sum of its proper divisors (170500408).

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

161053112 is a wasteful number, since it uses less digits than its factorization.

161053112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11831 (or 11827 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 161053112 is about 12690.6702738665. The cubic root of 161053112 is about 544.0719970309.

The spelling of 161053112 in words is "one hundred sixty-one million, fifty-three thousand, one hundred twelve".