4256556431 has 16 divisors (see below), whose sum is σ = 4356108288. Its totient is φ = 4158237600.

The previous prime is 4256556413. The next prime is 4256556467. The reversal of 4256556431 is 1346556524.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4256556431 is a prime.

It is a super-2 number, since 2×4256556431² = 36236545300574915522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4256556481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6439241 + ... + 6439901.

It is an arithmetic number, because the mean of its divisors is an integer number (272256768).

Almost surely, 2^4256556431 is an apocalyptic number.

4256556431 is a deficient number, since it is larger than the sum of its proper divisors (99551857).

4256556431 is a wasteful number, since it uses less digits than its factorization.

4256556431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382.

The product of its digits is 432000, while the sum is 41.

The square root of 4256556431 is about 65242.2902035175. The cubic root of 4256556431 is about 1620.6384252741.

The spelling of 4256556431 in words is "four billion, two hundred fifty-six million, five hundred fifty-six thousand, four hundred thirty-one".