5215565 has 4 divisors (see below), whose sum is σ = 6258684. Its totient is φ = 4172448.

The previous prime is 5215559. The next prime is 5215579. The reversal of 5215565 is 5655125.

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 3031081 + 2184484 = 1741^2 + 1478^2 .

It is a cyclic number.

It is not a de Polignac number, because 5215565 - 2²² = 1021261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521552 + ... + 521561.

It is an arithmetic number, because the mean of its divisors is an integer number (1564671).

Almost surely, 2^5215565 is an apocalyptic number.

It is an amenable number.

5215565 is a deficient number, since it is larger than the sum of its proper divisors (1043119).

5215565 is a wasteful number, since it uses less digits than its factorization.

5215565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043118.

The product of its digits is 7500, while the sum is 29.

The square root of 5215565 is about 2283.7611521348. The cubic root of 5215565 is about 173.4205080072.

The spelling of 5215565 in words is "five million, two hundred fifteen thousand, five hundred sixty-five".