2556444545 has 16 divisors (see below), whose sum is σ = 3096662400. Its totient is φ = 2025961344.

The previous prime is 2556444529. The next prime is 2556444577. The reversal of 2556444545 is 5454446552.

It is a cyclic number.

It is not a de Polignac number, because 2556444545 - 2⁴ = 2556444529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2556444496 and 2556444505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226322 + ... + 237348.

It is an arithmetic number, because the mean of its divisors is an integer number (193541400).

Almost surely, 2^2556444545 is an apocalyptic number.

It is an amenable number.

2556444545 is a deficient number, since it is larger than the sum of its proper divisors (540217855).

2556444545 is a wasteful number, since it uses less digits than its factorization.

2556444545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11464.

The product of its digits is 1920000, while the sum is 44.

The square root of 2556444545 is about 50561.2949300154. The cubic root of 2556444545 is about 1367.3471574123.

The spelling of 2556444545 in words is "two billion, five hundred fifty-six million, four hundred forty-four thousand, five hundred forty-five".