5217565 has 4 divisors (see below), whose sum is σ = 6261084. Its totient is φ = 4174048.

The previous prime is 5217557. The next prime is 5217587. The reversal of 5217565 is 5657125.

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 2042041 + 3175524 = 1429^2 + 1782^2 .

It is a cyclic number.

It is not a de Polignac number, because 5217565 - 2³ = 5217557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521752 + ... + 521761.

It is an arithmetic number, because the mean of its divisors is an integer number (1565271).

Almost surely, 2^5217565 is an apocalyptic number.

It is an amenable number.

5217565 is a deficient number, since it is larger than the sum of its proper divisors (1043519).

5217565 is a wasteful number, since it uses less digits than its factorization.

5217565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043518.

The product of its digits is 10500, while the sum is 31.

The square root of 5217565 is about 2284.1989843269. The cubic root of 5217565 is about 173.4426722208.

The spelling of 5217565 in words is "five million, two hundred seventeen thousand, five hundred sixty-five".