57115422 has 128 divisors (see below), whose sum is σ = 159667200. Its totient is φ = 14732928.

The previous prime is 57115391. The next prime is 57115433. The reversal of 57115422 is 22451175.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 289828 + ... + 290024.

It is an arithmetic number, because the mean of its divisors is an integer number (1247400).

Almost surely, 2^57115422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57115422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79833600).

57115422 is an abundant number, since it is smaller than the sum of its proper divisors (102551778).

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

57115422 is a wasteful number, since it uses less digits than its factorization.

57115422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 281 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 57115422 is about 7557.4745781908. The cubic root of 57115422 is about 385.1097050611.

Adding to 57115422 its reverse (22451175), we get a palindrome (79566597).

The spelling of 57115422 in words is "fifty-seven million, one hundred fifteen thousand, four hundred twenty-two".