55285774847 has 16 divisors (see below), whose sum is σ = 57111132672. Its totient is φ = 53478270720.

The previous prime is 55285774781. The next prime is 55285774849. The reversal of 55285774847 is 74847758255.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 55285774847 - 2²⁰ = 55284726271 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55285774847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55285774849) 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, 15385283 + ... + 15388875.

It is an arithmetic number, because the mean of its divisors is an integer number (3569445792).

Almost surely, 2^55285774847 is an apocalyptic number.

55285774847 is a deficient number, since it is larger than the sum of its proper divisors (1825357825).

55285774847 is a wasteful number, since it uses less digits than its factorization.

55285774847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5938.

The product of its digits is 87808000, while the sum is 62.

The spelling of 55285774847 in words is "fifty-five billion, two hundred eighty-five million, seven hundred seventy-four thousand, eight hundred forty-seven".