22214565 has 12 divisors (see below), whose sum is σ = 38505324. Its totient is φ = 11847744.

The previous prime is 22214539. The next prime is 22214567. The reversal of 22214565 is 56541222.

It can be written as a sum of positive squares in 2 ways, for example, as 4524129 + 17690436 = 2127^2 + 4206^2 .

It is not a de Polignac number, because 22214565 - 2⁶ = 22214501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22214567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 246784 + ... + 246873.

It is an arithmetic number, because the mean of its divisors is an integer number (3208777).

Almost surely, 2^22214565 is an apocalyptic number.

It is an amenable number.

22214565 is a deficient number, since it is larger than the sum of its proper divisors (16290759).

22214565 is a wasteful number, since it uses less digits than its factorization.

22214565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493668 (or 493665 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 22214565 is about 4713.2329668710. The cubic root of 22214565 is about 281.1119263008. Note that the first 3 decimals are identical.

Adding to 22214565 its reverse (56541222), we get a palindrome (78755787).

It can be divided in two parts, 2221 and 4565, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 22214565 in words is "twenty-two million, two hundred fourteen thousand, five hundred sixty-five".