2556343443 has 6 divisors (see below), whose sum is σ = 3408574692. Its totient is φ = 1704170580.

The previous prime is 2556343411. The next prime is 2556343457. The reversal of 2556343443 is 3443436552.

2556343443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2556343443 - 2⁵ = 2556343411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2556343463) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72978 + ... + 102168.

It is an arithmetic number, because the mean of its divisors is an integer number (568095782).

Almost surely, 2^2556343443 is an apocalyptic number.

2556343443 is a deficient number, since it is larger than the sum of its proper divisors (852231249).

2556343443 is an frugal number, since it uses more digits than its factorization.

2556343443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58385 (or 29194 counting only the distinct ones).

The product of its digits is 518400, while the sum is 39.

The square root of 2556343443 is about 50560.2951237431. The cubic root of 2556343443 is about 1367.3291319408.

Adding to 2556343443 its reverse (3443436552), we get a palindrome (5999779995).

It can be divided in two parts, 25563 and 43443, that added together give a triangular number (69006 = T₃₇₁).

The spelling of 2556343443 in words is "two billion, five hundred fifty-six million, three hundred forty-three thousand, four hundred forty-three".