57233220 has 96 divisors (see below), whose sum is σ = 185141376. Its totient is φ = 13056000.

The previous prime is 57233219. The next prime is 57233221. The reversal of 57233220 is 2233275.

57233220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (57233219) and next prime (57233221).

It is not an unprimeable number, because it can be changed into a prime (57233221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8670 + ... + 13770.

It is an arithmetic number, because the mean of its divisors is an integer number (1928556).

Almost surely, 2^57233220 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 57233220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92570688).

57233220 is an abundant number, since it is smaller than the sum of its proper divisors (127908156).

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

57233220 is a wasteful number, since it uses less digits than its factorization.

57233220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5141 (or 5139 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 57233220 is about 7565.2640403359. The cubic root of 57233220 is about 385.3742804260.

Adding to 57233220 its reverse (2233275), we get a palindrome (59466495).

Subtracting from 57233220 its reverse (2233275), we obtain a palindrome (54999945).

The spelling of 57233220 in words is "fifty-seven million, two hundred thirty-three thousand, two hundred twenty".