5256643 has 8 divisors (see below), whose sum is σ = 6037760. Its totient is φ = 4483080.

The previous prime is 5256623. The next prime is 5256649. The reversal of 5256643 is 3466525.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5256643 - 2⁹ = 5256131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5256649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303 + ... + 3256.

It is an arithmetic number, because the mean of its divisors is an integer number (754720).

Almost surely, 2^5256643 is an apocalyptic number.

5256643 is a deficient number, since it is larger than the sum of its proper divisors (781117).

5256643 is a wasteful number, since it uses less digits than its factorization.

5256643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3777.

The product of its digits is 21600, while the sum is 31.

The square root of 5256643 is about 2292.7370106491. The cubic root of 5256643 is about 173.8746068871.

The spelling of 5256643 in words is "five million, two hundred fifty-six thousand, six hundred forty-three".