55040444433 has 32 divisors (see below), whose sum is σ = 87828787200. Its totient is φ = 33865267968.

The previous prime is 55040444419. The next prime is 55040444447. The reversal of 55040444433 is 33444404055.

It is an interprime number because it is at equal distance from previous prime (55040444419) and next prime (55040444447).

It is not a de Polignac number, because 55040444433 - 2⁵ = 55040444401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55040444483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3040816 + ... + 3058862.

It is an arithmetic number, because the mean of its divisors is an integer number (2744649600).

Almost surely, 2^55040444433 is an apocalyptic number.

It is an amenable number.

55040444433 is a deficient number, since it is larger than the sum of its proper divisors (32788342767).

55040444433 is a wasteful number, since it uses less digits than its factorization.

55040444433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26758 (or 26752 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 36.

Adding to 55040444433 its reverse (33444404055), we get a palindrome (88484848488).

The spelling of 55040444433 in words is "fifty-five billion, forty million, four hundred forty-four thousand, four hundred thirty-three".