55475091779 has 8 divisors (see below), whose sum is σ = 56832532848. Its totient is φ = 54117859840.

The previous prime is 55475091743. The next prime is 55475091809. The reversal of 55475091779 is 97719057455.

55475091779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55475091779 - 2²⁰ = 55474043203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55475091719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 575924 + ... + 665310.

It is an arithmetic number, because the mean of its divisors is an integer number (7104066606).

Almost surely, 2^55475091779 is an apocalyptic number.

55475091779 is a deficient number, since it is larger than the sum of its proper divisors (1357441069).

55475091779 is a wasteful number, since it uses less digits than its factorization.

55475091779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104565.

The product of its (nonzero) digits is 13891500, while the sum is 59.

The spelling of 55475091779 in words is "fifty-five billion, four hundred seventy-five million, ninety-one thousand, seven hundred seventy-nine".