22243550 has 48 divisors (see below), whose sum is σ = 48285600. Its totient is φ = 7620480.

The previous prime is 22243541. The next prime is 22243579. The reversal of 22243550 is 5534222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16502 + ... + 17798.

It is an arithmetic number, because the mean of its divisors is an integer number (1005950).

Almost surely, 2^22243550 is an apocalyptic number.

22243550 is an abundant number, since it is smaller than the sum of its proper divisors (26042050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22243550 is a wasteful number, since it uses less digits than its factorization.

22243550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330 (or 1311 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 22243550 is about 4716.3068178396. The cubic root of 22243550 is about 281.2341357307.

Adding to 22243550 its reverse (5534222), we get a palindrome (27777772).

The spelling of 22243550 in words is "twenty-two million, two hundred forty-three thousand, five hundred fifty".