2556433239 has 16 divisors (see below), whose sum is σ = 3451022592. Its totient is φ = 1683174528.

The previous prime is 2556433237. The next prime is 2556433273. The reversal of 2556433239 is 9323346552.

It is not a de Polignac number, because 2556433239 - 2¹ = 2556433237 is a prime.

It is a super-2 number, since 2×2556433239² = 13070701810928062242, 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 2556433239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556433237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82614 + ... + 109260.

It is an arithmetic number, because the mean of its divisors is an integer number (215688912).

Almost surely, 2^2556433239 is an apocalyptic number.

2556433239 is a deficient number, since it is larger than the sum of its proper divisors (894589353).

2556433239 is a wasteful number, since it uses less digits than its factorization.

2556433239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27046.

The product of its digits is 583200, while the sum is 42.

The square root of 2556433239 is about 50561.1831250021. The cubic root of 2556433239 is about 1367.3451416896.

The spelling of 2556433239 in words is "two billion, five hundred fifty-six million, four hundred thirty-three thousand, two hundred thirty-nine".