22172259 has 24 divisors (see below), whose sum is σ = 31821120. Its totient is φ = 13726512.

The previous prime is 22172257. The next prime is 22172261. The reversal of 22172259 is 95227122.

It is an interprime number because it is at equal distance from previous prime (22172257) and next prime (22172261).

It is not a de Polignac number, because 22172259 - 2¹ = 22172257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22172251) 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 23 ways as a sum of consecutive naturals, for example, 63724 + ... + 64070.

It is an arithmetic number, because the mean of its divisors is an integer number (1325880).

Almost surely, 2^22172259 is an apocalyptic number.

22172259 is a deficient number, since it is larger than the sum of its proper divisors (9648861).

22172259 is a wasteful number, since it uses less digits than its factorization.

22172259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 428 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 22172259 is about 4708.7428258507. The cubic root of 22172259 is about 280.9333605902.

The spelling of 22172259 in words is "twenty-two million, one hundred seventy-two thousand, two hundred fifty-nine".