161055044 has 12 divisors (see below), whose sum is σ = 290938368. Its totient is φ = 77929800.

The previous prime is 161055031. The next prime is 161055049. The reversal of 161055044 is 440550161.

It is not an unprimeable number, because it can be changed into a prime (161055049) 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, 649292 + ... + 649539.

It is an arithmetic number, because the mean of its divisors is an integer number (24244864).

Almost surely, 2^161055044 is an apocalyptic number.

It is an amenable number.

161055044 is a deficient number, since it is larger than the sum of its proper divisors (129883324).

161055044 is a wasteful number, since it uses less digits than its factorization.

161055044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298866 (or 1298864 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 161055044 is about 12690.7463925492. The cubic root of 161055044 is about 544.0741725925.

The spelling of 161055044 in words is "one hundred sixty-one million, fifty-five thousand, forty-four".