5256565 has 4 divisors (see below), whose sum is σ = 6307884. Its totient is φ = 4205248.

The previous prime is 5256547. The next prime is 5256583. The reversal of 5256565 is 5656525.

It is a happy number.

5256565 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (5256547) and next prime (5256583).

It can be written as a sum of positive squares in 2 ways, for example, as 651249 + 4605316 = 807^2 + 2146^2 .

It is a cyclic number.

It is not a de Polignac number, because 5256565 - 2¹⁷ = 5125493 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5256565.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525652 + ... + 525661.

It is an arithmetic number, because the mean of its divisors is an integer number (1576971).

Almost surely, 2^5256565 is an apocalyptic number.

It is an amenable number.

5256565 is a deficient number, since it is larger than the sum of its proper divisors (1051319).

5256565 is a wasteful number, since it uses less digits than its factorization.

5256565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051318.

The product of its digits is 45000, while the sum is 34.

The square root of 5256565 is about 2292.7200003489. The cubic root of 5256565 is about 173.8737468777.

It can be divided in two parts, 525 and 6565, that multiplied together give a triangular number (3446625 = T₂₆₂₅).

The spelling of 5256565 in words is "five million, two hundred fifty-six thousand, five hundred sixty-five".