4215565 has 4 divisors (see below), whose sum is σ = 5058684. Its totient is φ = 3372448.

The previous prime is 4215553. The next prime is 4215577. The reversal of 4215565 is 5655124.

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 (4215553) and next prime (4215577).

It can be written as a sum of positive squares in 2 ways, for example, as 2196324 + 2019241 = 1482^2 + 1421^2 .

It is a cyclic number.

It is not a de Polignac number, because 4215565 - 2¹³ = 4207373 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, 421552 + ... + 421561.

It is an arithmetic number, because the mean of its divisors is an integer number (1264671).

Almost surely, 2^4215565 is an apocalyptic number.

It is an amenable number.

4215565 is a deficient number, since it is larger than the sum of its proper divisors (843119).

4215565 is an equidigital number, since it uses as much as digits as its factorization.

4215565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843118.

The product of its digits is 6000, while the sum is 28.

The square root of 4215565 is about 2053.1841125432. The cubic root of 4215565 is about 161.5419285552.

The spelling of 4215565 in words is "four million, two hundred fifteen thousand, five hundred sixty-five".