5555622779 has 16 divisors (see below), whose sum is σ = 6525542400. Its totient is φ = 4629952224.

The previous prime is 5555622757. The next prime is 5555622811. The reversal of 5555622779 is 9772265555.

It is a cyclic number.

It is not a de Polignac number, because 5555622779 - 2²⁴ = 5538845563 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 5555622779.

It is not an unprimeable number, because it can be changed into a prime (5555622719) 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, 396902 + ... + 410660.

It is an arithmetic number, because the mean of its divisors is an integer number (407846400).

Almost surely, 2^5555622779 is an apocalyptic number.

5555622779 is a deficient number, since it is larger than the sum of its proper divisors (969919621).

5555622779 is a wasteful number, since it uses less digits than its factorization.

5555622779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15362.

The product of its digits is 6615000, while the sum is 53.

The square root of 5555622779 is about 74536.0501972032. The cubic root of 5555622779 is about 1771.1047588325.

The spelling of 5555622779 in words is "five billion, five hundred fifty-five million, six hundred twenty-two thousand, seven hundred seventy-nine".