22550427 has 16 divisors (see below), whose sum is σ = 34312480. Its totient is φ = 14626656.

The previous prime is 22550413. The next prime is 22550441. The reversal of 22550427 is 72405522.

It is an interprime number because it is at equal distance from previous prime (22550413) and next prime (22550441).

It is not a de Polignac number, because 22550427 - 2¹⁹ = 22026139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22550427.

It is not an unprimeable number, because it can be changed into a prime (22550467) 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 15 ways as a sum of consecutive naturals, for example, 10288 + ... + 12285.

It is an arithmetic number, because the mean of its divisors is an integer number (2144530).

Almost surely, 2^22550427 is an apocalyptic number.

22550427 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

22550427 is a deficient number, since it is larger than the sum of its proper divisors (11762053).

22550427 is a wasteful number, since it uses less digits than its factorization.

22550427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22619 (or 22613 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 22550427 is about 4748.7289878451. The cubic root of 22550427 is about 282.5215562949.

Adding to 22550427 its reverse (72405522), we get a palindrome (94955949).

The spelling of 22550427 in words is "twenty-two million, five hundred fifty thousand, four hundred twenty-seven".