22271550 has 48 divisors (see below), whose sum is σ = 63126912. Its totient is φ = 5090400.

The previous prime is 22271539. The next prime is 22271551. The reversal of 22271550 is 5517222.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 22271550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22271551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9556 + ... + 11655.

It is an arithmetic number, because the mean of its divisors is an integer number (1315144).

Almost surely, 2^22271550 is an apocalyptic number.

22271550 is an abundant number, since it is smaller than the sum of its proper divisors (40855362).

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

22271550 is a wasteful number, since it uses less digits than its factorization.

22271550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21233 (or 21228 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 22271550 is about 4719.2743086199. The cubic root of 22271550 is about 281.3520913323.

Adding to 22271550 its reverse (5517222), we get a palindrome (27788772).

The spelling of 22271550 in words is "twenty-two million, two hundred seventy-one thousand, five hundred fifty".