222502566 has 64 divisors (see below), whose sum is σ = 526176000. Its totient is φ = 61837440.

The previous prime is 222502561. The next prime is 222502573. The reversal of 222502566 is 665205222.

222502566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222502561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147685 + ... + 149183.

It is an arithmetic number, because the mean of its divisors is an integer number (8221500).

Almost surely, 2^222502566 is an apocalyptic number.

222502566 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 222502566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263088000).

222502566 is an abundant number, since it is smaller than the sum of its proper divisors (303673434).

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

222502566 is a wasteful number, since it uses less digits than its factorization.

222502566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 222502566 is about 14916.5199024437. The cubic root of 222502566 is about 605.9614664690.

Adding to 222502566 its reverse (665205222), we get a palindrome (887707788).

The spelling of 222502566 in words is "two hundred twenty-two million, five hundred two thousand, five hundred sixty-six".