222660550 has 48 divisors (see below), whose sum is σ = 489656160. Its totient is φ = 73704960.

The previous prime is 222660547. The next prime is 222660551. The reversal of 222660550 is 55066222.

222660550 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 (222660551) 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, 819 + ... + 21118.

It is an arithmetic number, because the mean of its divisors is an integer number (10201170).

Almost surely, 2^222660550 is an apocalyptic number.

222660550 is an abundant number, since it is smaller than the sum of its proper divisors (266995610).

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

222660550 is a wasteful number, since it uses less digits than its factorization.

222660550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21985 (or 21980 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 222660550 is about 14921.8145679405. The cubic root of 222660550 is about 606.1048499354.

The spelling of 222660550 in words is "two hundred twenty-two million, six hundred sixty thousand, five hundred fifty".