57220222 has 4 divisors (see below), whose sum is σ = 85830336. Its totient is φ = 28610110.

The previous prime is 57220217. The next prime is 57220259. The reversal of 57220222 is 22202275.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 57220193 and 57220202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14305054 + ... + 14305057.

It is an arithmetic number, because the mean of its divisors is an integer number (21457584).

Almost surely, 2^57220222 is an apocalyptic number.

57220222 is a deficient number, since it is larger than the sum of its proper divisors (28610114).

57220222 is a wasteful number, since it uses less digits than its factorization.

57220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28610113.

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 57220222 is about 7564.4049336349. The cubic root of 57220222 is about 385.3451046306.

Adding to 57220222 its reverse (22202275), we get a palindrome (79422497).

It can be divided in two parts, 5 and 7220222, that added together give a palindrome (7220227).

The spelling of 57220222 in words is "fifty-seven million, two hundred twenty thousand, two hundred twenty-two".