161153512 has 16 divisors (see below), whose sum is σ = 325406340. Its totient is φ = 74378496.

The previous prime is 161153471. The next prime is 161153519. The reversal of 161153512 is 215351161.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 161137636 + 15876 = 12694^2 + 126^2 .

It is not an unprimeable number, because it can be changed into a prime (161153519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774673 + ... + 774880.

Almost surely, 2^161153512 is an apocalyptic number.

It is an amenable number.

161153512 is an abundant number, since it is smaller than the sum of its proper divisors (164252828).

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

161153512 is a wasteful number, since it uses less digits than its factorization.

161153512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549572 (or 1549568 counting only the distinct ones).

The product of its digits is 900, while the sum is 25.

The square root of 161153512 is about 12694.6253194019. The cubic root of 161153512 is about 544.1850311325.

The spelling of 161153512 in words is "one hundred sixty-one million, one hundred fifty-three thousand, five hundred twelve".