5256691 has 4 divisors (see below), whose sum is σ = 5734584. Its totient is φ = 4778800.

The previous prime is 5256683. The next prime is 5256697. The reversal of 5256691 is 1966525.

It is a happy number.

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 5256691 - 2³ = 5256683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5256697) 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, 238930 + ... + 238951.

It is an arithmetic number, because the mean of its divisors is an integer number (1433646).

Almost surely, 2^5256691 is an apocalyptic number.

5256691 is a deficient number, since it is larger than the sum of its proper divisors (477893).

5256691 is a wasteful number, since it uses less digits than its factorization.

5256691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477892.

The product of its digits is 16200, while the sum is 34.

The square root of 5256691 is about 2292.7474784633. The cubic root of 5256691 is about 173.8751361194.

The spelling of 5256691 in words is "five million, two hundred fifty-six thousand, six hundred ninety-one".