57543320 has 16 divisors (see below), whose sum is σ = 129472560. Its totient is φ = 23017312.

The previous prime is 57543307. The next prime is 57543323. The reversal of 57543320 is 2334575.

It is a super-2 number, since 2×57543320² = 6622467353244800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57543323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 719252 + ... + 719331.

It is an arithmetic number, because the mean of its divisors is an integer number (8092035).

Almost surely, 2^57543320 is an apocalyptic number.

It is an amenable number.

57543320 is an abundant number, since it is smaller than the sum of its proper divisors (71929240).

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

57543320 is a wasteful number, since it uses less digits than its factorization.

57543320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438594 (or 1438590 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 29.

The square root of 57543320 is about 7585.7313424613. The cubic root of 57543320 is about 386.0690364855.

Adding to 57543320 its reverse (2334575), we get a palindrome (59877895).

The spelling of 57543320 in words is "fifty-seven million, five hundred forty-three thousand, three hundred twenty".