161304544 has 12 divisors (see below), whose sum is σ = 317568384. Its totient is φ = 80652256.

The previous prime is 161304541. The next prime is 161304667. The reversal of 161304544 is 445403161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161304541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2520352 + ... + 2520415.

It is an arithmetic number, because the mean of its divisors is an integer number (26464032).

Almost surely, 2^161304544 is an apocalyptic number.

It is an amenable number.

161304544 is a deficient number, since it is larger than the sum of its proper divisors (156263840).

161304544 is an equidigital number, since it uses as much as digits as its factorization.

161304544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5040777 (or 5040769 counting only the distinct ones).

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

The square root of 161304544 is about 12700.5725855176. The cubic root of 161304544 is about 544.3549802495.

The spelling of 161304544 in words is "one hundred sixty-one million, three hundred four thousand, five hundred forty-four".