5545581091 has 16 divisors (see below), whose sum is σ = 5919155200. Its totient is φ = 5180355648.

The previous prime is 5545581073. The next prime is 5545581109. The reversal of 5545581091 is 1901855455.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (5545581073) and next prime (5545581109).

It is a cyclic number.

It is not a de Polignac number, because 5545581091 - 2¹¹ = 5545579043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5545581001) 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, 1404466 + ... + 1408408.

It is an arithmetic number, because the mean of its divisors is an integer number (369947200).

Almost surely, 2^5545581091 is an apocalyptic number.

5545581091 is the 42995-th hex number.

5545581091 is a deficient number, since it is larger than the sum of its proper divisors (373574109).

5545581091 is a wasteful number, since it uses less digits than its factorization.

5545581091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4978.

The product of its (nonzero) digits is 180000, while the sum is 43.

The square root of 5545581091 is about 74468.6584476987. The cubic root of 5545581091 is about 1770.0370353045.

The spelling of 5545581091 in words is "five billion, five hundred forty-five million, five hundred eighty-one thousand, ninety-one".