22207550 has 12 divisors (see below), whose sum is σ = 41306136. Its totient is φ = 8883000.

The previous prime is 22207531. The next prime is 22207553. The reversal of 22207550 is 5570222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22207553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 222026 + ... + 222125.

It is an arithmetic number, because the mean of its divisors is an integer number (3442178).

Almost surely, 2^22207550 is an apocalyptic number.

22207550 is a deficient number, since it is larger than the sum of its proper divisors (19098586).

22207550 is a wasteful number, since it uses less digits than its factorization.

22207550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444163 (or 444158 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 22207550 is about 4712.4887267770. The cubic root of 22207550 is about 281.0823329871.

Adding to 22207550 its reverse (5570222), we get a palindrome (27777772).

The spelling of 22207550 in words is "twenty-two million, two hundred seven thousand, five hundred fifty".