22055215 has 16 divisors (see below), whose sum is σ = 32574528. Its totient is φ = 13959936.

The previous prime is 22055213. The next prime is 22055233. The reversal of 22055215 is 51255022.

It is a cyclic number.

It is not a de Polignac number, because 22055215 - 2¹ = 22055213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22055213) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 23782 + ... + 24691.

It is an arithmetic number, because the mean of its divisors is an integer number (2035908).

Almost surely, 2^22055215 is an apocalyptic number.

22055215 is a deficient number, since it is larger than the sum of its proper divisors (10519313).

22055215 is a wasteful number, since it uses less digits than its factorization.

22055215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48498.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 22055215 is about 4696.2980101352. The cubic root of 22055215 is about 280.4381532913.

The spelling of 22055215 in words is "twenty-two million, fifty-five thousand, two hundred fifteen".