57158232 has 64 divisors (see below), whose sum is σ = 151536000. Its totient is φ = 17915904.

The previous prime is 57158219. The next prime is 57158237. The reversal of 57158232 is 23285175.

It is a junction number, because it is equal to n+sod(n) for n = 57158193 and 57158202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57158237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73944 + ... + 74712.

It is an arithmetic number, because the mean of its divisors is an integer number (2367750).

Almost surely, 2^57158232 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 57158232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75768000).

57158232 is an abundant number, since it is smaller than the sum of its proper divisors (94377768).

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

57158232 is a wasteful number, since it uses less digits than its factorization.

57158232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960 (or 956 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 57158232 is about 7560.3063429996. The cubic root of 57158232 is about 385.2058987482.

The spelling of 57158232 in words is "fifty-seven million, one hundred fifty-eight thousand, two hundred thirty-two".