222147550 has 48 divisors (see below), whose sum is σ = 428972544. Its totient is φ = 85500000.

The previous prime is 222147533. The next prime is 222147571. The reversal of 222147550 is 55741222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 388765 + ... + 389335.

It is an arithmetic number, because the mean of its divisors is an integer number (8936928).

Almost surely, 2^222147550 is an apocalyptic number.

222147550 is a deficient number, since it is larger than the sum of its proper divisors (206824994).

222147550 is a wasteful number, since it uses less digits than its factorization.

222147550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865 (or 860 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 222147550 is about 14904.6150570889. The cubic root of 222147550 is about 605.6390124605.

Adding to 222147550 its reverse (55741222), we get a palindrome (277888772).

The spelling of 222147550 in words is "two hundred twenty-two million, one hundred forty-seven thousand, five hundred fifty".