5555642777 has 4 divisors (see below), whose sum is σ = 5559390480. Its totient is φ = 5551895076.

The previous prime is 5555642707. The next prime is 5555642791. The reversal of 5555642777 is 7772465555.

5555642777 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5555642777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5555642707) 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, 1871627 + ... + 1874592.

It is an arithmetic number, because the mean of its divisors is an integer number (1389847620).

Almost surely, 2^5555642777 is an apocalyptic number.

It is an amenable number.

5555642777 is a deficient number, since it is larger than the sum of its proper divisors (3747703).

5555642777 is a wasteful number, since it uses less digits than its factorization.

5555642777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3747702.

The product of its digits is 10290000, while the sum is 53.

The square root of 5555642777 is about 74536.1843469331. The cubic root of 5555642777 is about 1771.1068839174.

The spelling of 5555642777 in words is "five billion, five hundred fifty-five million, six hundred forty-two thousand, seven hundred seventy-seven".