22156275 has 12 divisors (see below), whose sum is σ = 36631832. Its totient is φ = 11816640.

The previous prime is 22156271. The next prime is 22156307. The reversal of 22156275 is 57265122.

It is not a de Polignac number, because 22156275 - 2² = 22156271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22156271) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 147634 + ... + 147783.

Almost surely, 2^22156275 is an apocalyptic number.

22156275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22156275 is a deficient number, since it is larger than the sum of its proper divisors (14475557).

22156275 is a wasteful number, since it uses less digits than its factorization.

22156275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295430 (or 295425 counting only the distinct ones).

The product of its digits is 8400, while the sum is 30.

The square root of 22156275 is about 4707.0452515352. The cubic root of 22156275 is about 280.8658359968.

The spelling of 22156275 in words is "twenty-two million, one hundred fifty-six thousand, two hundred seventy-five".