2556553443 has 16 divisors (see below), whose sum is σ = 3508836096. Its totient is φ = 1654529760.

The previous prime is 2556553423. The next prime is 2556553453. The reversal of 2556553443 is 3443556552.

It is a happy number.

It is not a de Polignac number, because 2556553443 - 2⁵ = 2556553411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2556553395 and 2556553404.

It is not an unprimeable number, because it can be changed into a prime (2556553403) 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, 23178 + ... + 75168.

It is an arithmetic number, because the mean of its divisors is an integer number (219302256).

Almost surely, 2^2556553443 is an apocalyptic number.

2556553443 is a deficient number, since it is larger than the sum of its proper divisors (952282653).

2556553443 is a wasteful number, since it uses less digits than its factorization.

2556553443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52474.

The product of its digits is 1080000, while the sum is 42.

The square root of 2556553443 is about 50562.3718094790. The cubic root of 2556553443 is about 1367.3665723007.

The spelling of 2556553443 in words is "two billion, five hundred fifty-six million, five hundred fifty-three thousand, four hundred forty-three".