55891298433 has 4 divisors (see below), whose sum is σ = 74521731248. Its totient is φ = 37260865620.

The previous prime is 55891298417. The next prime is 55891298443. The reversal of 55891298433 is 33489219855.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 55891298433 - 2⁴ = 55891298417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55891298443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9315216403 + ... + 9315216408.

It is an arithmetic number, because the mean of its divisors is an integer number (18630432812).

Almost surely, 2^55891298433 is an apocalyptic number.

It is an amenable number.

55891298433 is a deficient number, since it is larger than the sum of its proper divisors (18630432815).

55891298433 is a wasteful number, since it uses less digits than its factorization.

55891298433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18630432814.

The product of its digits is 9331200, while the sum is 57.

The spelling of 55891298433 in words is "fifty-five billion, eight hundred ninety-one million, two hundred ninety-eight thousand, four hundred thirty-three".