2556344059 has 4 divisors (see below), whose sum is σ = 2556617904. Its totient is φ = 2556070216.

The previous prime is 2556344057. The next prime is 2556344069. The reversal of 2556344059 is 9504436552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2556344059 - 2¹ = 2556344057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2556344051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122407 + ... + 141760.

It is an arithmetic number, because the mean of its divisors is an integer number (639154476).

Almost surely, 2^2556344059 is an apocalyptic number.

2556344059 is a deficient number, since it is larger than the sum of its proper divisors (273845).

2556344059 is an equidigital number, since it uses as much as digits as its factorization.

2556344059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273844.

The product of its (nonzero) digits is 648000, while the sum is 43.

The square root of 2556344059 is about 50560.3012154793. The cubic root of 2556344059 is about 1367.3292417688.

The spelling of 2556344059 in words is "two billion, five hundred fifty-six million, three hundred forty-four thousand, fifty-nine".