55900019091 has 16 divisors (see below), whose sum is σ = 85184676864. Its totient is φ = 31941482304.

The previous prime is 55900019083. The next prime is 55900019159. The reversal of 55900019091 is 19091000955.

55900019091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55900019091 - 2³ = 55900019083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55900019041) 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, 626326 + ... + 709988.

It is an arithmetic number, because the mean of its divisors is an integer number (5324042304).

Almost surely, 2^55900019091 is an apocalyptic number.

55900019091 is a deficient number, since it is larger than the sum of its proper divisors (29284657773).

55900019091 is a wasteful number, since it uses less digits than its factorization.

55900019091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115490.

The product of its (nonzero) digits is 18225, while the sum is 39.

The spelling of 55900019091 in words is "fifty-five billion, nine hundred million, nineteen thousand, ninety-one".