161522544 has 40 divisors (see below), whose sum is σ = 418310032. Its totient is φ = 53706240.

The previous prime is 161522527. The next prime is 161522549. The reversal of 161522544 is 445225161.

161522544 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161522549) 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 7 ways as a sum of consecutive naturals, for example, 16212 + ... + 24204.

Almost surely, 2^161522544 is an apocalyptic number.

It is an amenable number.

161522544 is an abundant number, since it is smaller than the sum of its proper divisors (256787488).

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

161522544 is a wasteful number, since it uses less digits than its factorization.

161522544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8425 (or 8419 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 161522544 is about 12709.1519780039. The cubic root of 161522544 is about 544.6000982998.

The spelling of 161522544 in words is "one hundred sixty-one million, five hundred twenty-two thousand, five hundred forty-four".