161523244 has 12 divisors (see below), whose sum is σ = 284131624. Its totient is φ = 80342784.

The previous prime is 161523211. The next prime is 161523247. The reversal of 161523244 is 442325161.

It is not an unprimeable number, because it can be changed into a prime (161523247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103842 + ... + 105385.

Almost surely, 2^161523244 is an apocalyptic number.

It is an amenable number.

161523244 is a deficient number, since it is larger than the sum of its proper divisors (122608380).

161523244 is a wasteful number, since it uses less digits than its factorization.

161523244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209424 (or 209422 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 161523244 is about 12709.1795171836. The cubic root of 161523244 is about 544.6008850208.

The spelling of 161523244 in words is "one hundred sixty-one million, five hundred twenty-three thousand, two hundred forty-four".