161454544 has 20 divisors (see below), whose sum is σ = 316335780. Its totient is φ = 79819520.

The previous prime is 161454529. The next prime is 161454577. The reversal of 161454544 is 445454161.

It can be written as a sum of positive squares in 2 ways, for example, as 100801600 + 60652944 = 10040^2 + 7788^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55267 + ... + 58114.

It is an arithmetic number, because the mean of its divisors is an integer number (15816789).

Almost surely, 2^161454544 is an apocalyptic number.

It is an amenable number.

161454544 is a deficient number, since it is larger than the sum of its proper divisors (154881236).

161454544 is a wasteful number, since it uses less digits than its factorization.

161454544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113478 (or 113472 counting only the distinct ones).

The product of its digits is 38400, while the sum is 34.

The square root of 161454544 is about 12706.4764588772. The cubic root of 161454544 is about 544.5236631392.

The spelling of 161454544 in words is "one hundred sixty-one million, four hundred fifty-four thousand, five hundred forty-four".