57122436 has 72 divisors (see below), whose sum is σ = 163238880. Its totient is φ = 15458688.

The previous prime is 57122383. The next prime is 57122453. The reversal of 57122436 is 63422175.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8616 + ... + 13728.

Almost surely, 2^57122436 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 57122436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81619440).

57122436 is an abundant number, since it is smaller than the sum of its proper divisors (106116444).

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

57122436 is a wasteful number, since it uses less digits than its factorization.

57122436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5153 (or 5144 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 57122436 is about 7557.9386078480. The cubic root of 57122436 is about 385.1254687481.

The spelling of 57122436 in words is "fifty-seven million, one hundred twenty-two thousand, four hundred thirty-six".