222775550 has 48 divisors (see below), whose sum is σ = 427097664. Its totient is φ = 86400000.

The previous prime is 222775549. The next prime is 222775601. The reversal of 222775550 is 55577222.

It is a self number, because there is not a number n which added to its sum of digits gives 222775550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 555350 + ... + 555750.

It is an arithmetic number, because the mean of its divisors is an integer number (8897868).

Almost surely, 2^222775550 is an apocalyptic number.

222775550 is a deficient number, since it is larger than the sum of its proper divisors (204322114).

222775550 is a wasteful number, since it uses less digits than its factorization.

222775550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725 (or 720 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 35.

The square root of 222775550 is about 14925.6674892616. The cubic root of 222775550 is about 606.2091792403.

It can be divided in two parts, 2227 and 75550, that added together give a palindrome (77777).

The spelling of 222775550 in words is "two hundred twenty-two million, seven hundred seventy-five thousand, five hundred fifty".