55887407783 has 4 divisors (see below), whose sum is σ = 56327466240. Its totient is φ = 55447349328.

The previous prime is 55887407777. The next prime is 55887407833. The reversal of 55887407783 is 38770478855.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38770478855 = 5 ⋅7754095771.

It is a cyclic number.

It is not a de Polignac number, because 55887407783 - 2⁴ = 55887407767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55887407753) 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, 220029038 + ... + 220029291.

It is an arithmetic number, because the mean of its divisors is an integer number (14081866560).

Almost surely, 2^55887407783 is an apocalyptic number.

55887407783 is a deficient number, since it is larger than the sum of its proper divisors (440058457).

55887407783 is a wasteful number, since it uses less digits than its factorization.

55887407783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440058456.

The product of its (nonzero) digits is 52684800, while the sum is 62.

The spelling of 55887407783 in words is "fifty-five billion, eight hundred eighty-seven million, four hundred seven thousand, seven hundred eighty-three".