2555856019 has 4 divisors (see below), whose sum is σ = 2597755360. Its totient is φ = 2513956680.

The previous prime is 2555855989. The next prime is 2555856097. The reversal of 2555856019 is 9106585552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2555856019 - 2⁷ = 2555855891 is a prime.

It is a super-2 number, since 2×2555856019² = 13064799979717056722, which contains 22 as substring.

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 2555856019.

It is not an unprimeable number, because it can be changed into a prime (2555856119) 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, 20949579 + ... + 20949700.

It is an arithmetic number, because the mean of its divisors is an integer number (649438840).

Almost surely, 2^2555856019 is an apocalyptic number.

2555856019 is a deficient number, since it is larger than the sum of its proper divisors (41899341).

2555856019 is an equidigital number, since it uses as much as digits as its factorization.

2555856019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41899340.

The product of its (nonzero) digits is 540000, while the sum is 46.

The square root of 2555856019 is about 50555.4746689219. The cubic root of 2555856019 is about 1367.2422224660.

The spelling of 2555856019 in words is "two billion, five hundred fifty-five million, eight hundred fifty-six thousand, nineteen".