2056556543 has 2 divisors, whose sum is σ = 2056556544. Its totient is φ = 2056556542.

The previous prime is 2056556507. The next prime is 2056556563. The reversal of 2056556543 is 3456556502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2056556543 - 2¹⁰ = 2056555519 is a prime.

It is a super-2 number, since 2×2056556543² = 8458849629112221698, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2056556543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2056556563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028278271 + 1028278272.

It is an arithmetic number, because the mean of its divisors is an integer number (1028278272).

Almost surely, 2^2056556543 is an apocalyptic number.

2056556543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2056556543 is an equidigital number, since it uses as much as digits as its factorization.

2056556543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540000, while the sum is 41.

The square root of 2056556543 is about 45349.2727946105. The cubic root of 2056556543 is about 1271.6869604575.

Subtracting from 2056556543 its sum of digits (41), we obtain a palindrome (2056556502).

The spelling of 2056556543 in words is "two billion, fifty-six million, five hundred fifty-six thousand, five hundred forty-three".