57420222 has 32 divisors (see below), whose sum is σ = 118010112. Its totient is φ = 18615744.

The previous prime is 57420199. The next prime is 57420227. The reversal of 57420222 is 22202475.

It is a junction number, because it is equal to n+sod(n) for n = 57420192 and 57420201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57420227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117663 + ... + 118149.

It is an arithmetic number, because the mean of its divisors is an integer number (3687816).

Almost surely, 2^57420222 is an apocalyptic number.

57420222 is an abundant number, since it is smaller than the sum of its proper divisors (60589890).

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

57420222 is a wasteful number, since it uses less digits than its factorization.

57420222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992.

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 57420222 is about 7577.6132126152. The cubic root of 57420222 is about 385.7935440104.

Adding to 57420222 its reverse (22202475), we get a palindrome (79622697).

The spelling of 57420222 in words is "fifty-seven million, four hundred twenty thousand, two hundred twenty-two".