5256641 has 4 divisors (see below), whose sum is σ = 5661012. Its totient is φ = 4852272.

The previous prime is 5256623. The next prime is 5256649. The reversal of 5256641 is 1466525.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3254416 + 2002225 = 1804^2 + 1415^2 .

It is a cyclic number.

It is not a de Polignac number, because 5256641 - 2¹⁰ = 5255617 is a prime.

It is a Duffinian number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 202166 + ... + 202191.

It is an arithmetic number, because the mean of its divisors is an integer number (1415253).

Almost surely, 2^5256641 is an apocalyptic number.

It is an amenable number.

5256641 is a deficient number, since it is larger than the sum of its proper divisors (404371).

5256641 is a wasteful number, since it uses less digits than its factorization.

5256641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404370.

The product of its digits is 7200, while the sum is 29.

The square root of 5256641 is about 2292.7365744891. The cubic root of 5256641 is about 173.8745848357.

The spelling of 5256641 in words is "five million, two hundred fifty-six thousand, six hundred forty-one".