55044561 has 32 divisors (see below), whose sum is σ = 89026560. Its totient is φ = 29793600.

The previous prime is 55044547. The next prime is 55044599. The reversal of 55044561 is 16544055.

It is not a de Polignac number, because 55044561 - 2⁵ = 55044529 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55044061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11230 + ... + 15368.

It is an arithmetic number, because the mean of its divisors is an integer number (2782080).

Almost surely, 2^55044561 is an apocalyptic number.

It is an amenable number.

55044561 is a deficient number, since it is larger than the sum of its proper divisors (33981999).

55044561 is a wasteful number, since it uses less digits than its factorization.

55044561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4197.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 55044561 is about 7419.2021808278. The cubic root of 55044561 is about 380.3979234209.

The spelling of 55044561 in words is "fifty-five million, forty-four thousand, five hundred sixty-one".