57020222 has 36 divisors (see below), whose sum is σ = 103459104. Its totient is φ = 23476320.

The previous prime is 57020213. The next prime is 57020237. The reversal of 57020222 is 22202075.

It is a junction number, because it is equal to n+sod(n) for n = 57020194 and 57020203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 416138 + ... + 416274.

It is an arithmetic number, because the mean of its divisors is an integer number (2873864).

Almost surely, 2^57020222 is an apocalyptic number.

57020222 is a deficient number, since it is larger than the sum of its proper divisors (46438882).

57020222 is a wasteful number, since it uses less digits than its factorization.

57020222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 57020222 is about 7551.1735511773. The cubic root of 57020222 is about 384.8956190858.

Adding to 57020222 its reverse (22202075), we get a palindrome (79222297).

The spelling of 57020222 in words is "fifty-seven million, twenty thousand, two hundred twenty-two".