2556322553 has 16 divisors (see below), whose sum is σ = 2650807296. Its totient is φ = 2463814080.

The previous prime is 2556322543. The next prime is 2556322579. The reversal of 2556322553 is 3552236552.

It is a cyclic number.

It is not a de Polignac number, because 2556322553 - 2⁸ = 2556322297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2556322543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1191800 + ... + 1193942.

It is an arithmetic number, because the mean of its divisors is an integer number (165675456).

Almost surely, 2^2556322553 is an apocalyptic number.

It is an amenable number.

2556322553 is a deficient number, since it is larger than the sum of its proper divisors (94484743).

2556322553 is a wasteful number, since it uses less digits than its factorization.

2556322553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2584.

The product of its digits is 270000, while the sum is 38.

The square root of 2556322553 is about 50560.0885382927. The cubic root of 2556322553 is about 1367.3254074043.

The spelling of 2556322553 in words is "two billion, five hundred fifty-six million, three hundred twenty-two thousand, five hundred fifty-three".