5544444561 has 16 divisors (see below), whose sum is σ = 7922500224. Its totient is φ = 3440029824.

The previous prime is 5544444559. The next prime is 5544444593. The reversal of 5544444561 is 1654444455.

It is a happy number.

It is not a de Polignac number, because 5544444561 - 2¹ = 5544444559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5544444551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1083316 + ... + 1088421.

It is an arithmetic number, because the mean of its divisors is an integer number (495156264).

Almost surely, 2^5544444561 is an apocalyptic number.

It is an amenable number.

5544444561 is a deficient number, since it is larger than the sum of its proper divisors (2378055663).

5544444561 is a wasteful number, since it uses less digits than its factorization.

5544444561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171800.

The product of its digits is 768000, while the sum is 42.

The square root of 5544444561 is about 74461.0271282904. The cubic root of 5544444561 is about 1769.9161079330.

The spelling of 5544444561 in words is "five billion, five hundred forty-four million, four hundred forty-four thousand, five hundred sixty-one".