2556722279 has 8 divisors (see below), whose sum is σ = 2607068160. Its totient is φ = 2506454496.

The previous prime is 2556722269. The next prime is 2556722299. The reversal of 2556722279 is 9722276552.

2556722279 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 2556722279 - 2¹² = 2556718183 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 (2556722209) 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, 48929 + ... + 86645.

It is an arithmetic number, because the mean of its divisors is an integer number (325883520).

Almost surely, 2^2556722279 is an apocalyptic number.

2556722279 is a deficient number, since it is larger than the sum of its proper divisors (50345881).

2556722279 is a wasteful number, since it uses less digits than its factorization.

2556722279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39049.

The product of its digits is 1058400, while the sum is 47.

The square root of 2556722279 is about 50564.0413634037. The cubic root of 2556722279 is about 1367.3966721500.

The spelling of 2556722279 in words is "two billion, five hundred fifty-six million, seven hundred twenty-two thousand, two hundred seventy-nine".