55919625589 has 2 divisors, whose sum is σ = 55919625590. Its totient is φ = 55919625588.

The previous prime is 55919625493. The next prime is 55919625599. The reversal of 55919625589 is 98552691955.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36192018564 + 19727607025 = 190242^2 + 140455^2 .

It is a cyclic number.

It is not a de Polignac number, because 55919625589 - 2²⁷ = 55785407861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55919625589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55919625599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27959812794 + 27959812795.

It is an arithmetic number, because the mean of its divisors is an integer number (27959812795).

Almost surely, 2^55919625589 is an apocalyptic number.

It is an amenable number.

55919625589 is a deficient number, since it is larger than the sum of its proper divisors (1).

55919625589 is an equidigital number, since it uses as much as digits as its factorization.

55919625589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43740000, while the sum is 64.

The spelling of 55919625589 in words is "fifty-five billion, nine hundred nineteen million, six hundred twenty-five thousand, five hundred eighty-nine".