57448040 has 32 divisors (see below), whose sum is σ = 139202280. Its totient is φ = 21211392.

The previous prime is 57448037. The next prime is 57448057. The reversal of 57448040 is 4084475.

57448040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 39112516 + 18335524 = 6254^2 + 4282^2 .

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 57447988 and 57448006.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 54719 + ... + 55758.

Almost surely, 2^57448040 is an apocalyptic number.

It is an amenable number.

57448040 is an abundant number, since it is smaller than the sum of its proper divisors (81754240).

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

57448040 is a wasteful number, since it uses less digits than its factorization.

57448040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110501 (or 110497 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 57448040 is about 7579.4485287519. The cubic root of 57448040 is about 385.8558349119.

The spelling of 57448040 in words is "fifty-seven million, four hundred forty-eight thousand, forty".