57222224 has 40 divisors (see below), whose sum is σ = 119575680. Its totient is φ = 26438400.

The previous prime is 57222223. The next prime is 57222247. The reversal of 57222224 is 42222275.

It is a junction number, because it is equal to n+sod(n) for n = 57222193 and 57222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57222223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10169 + ... + 14759.

It is an arithmetic number, because the mean of its divisors is an integer number (2989392).

Almost surely, 2^57222224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57222224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59787840).

57222224 is an abundant number, since it is smaller than the sum of its proper divisors (62353456).

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

57222224 is a wasteful number, since it uses less digits than its factorization.

57222224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4659 (or 4653 counting only the distinct ones).

The product of its digits is 4480, while the sum is 26.

The square root of 57222224 is about 7564.5372627809. The cubic root of 57222224 is about 385.3495986823.

Adding to 57222224 its reverse (42222275), we get a palindrome (99444499).

The spelling of 57222224 in words is "fifty-seven million, two hundred twenty-two thousand, two hundred twenty-four".