57811040 has 96 divisors (see below), whose sum is σ = 158505984. Its totient is φ = 19514880.

The previous prime is 57811037. The next prime is 57811043. The reversal of 57811040 is 4011875.

It is an interprime number because it is at equal distance from previous prime (57811037) and next prime (57811043).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57811043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79157 + ... + 79883.

It is an arithmetic number, because the mean of its divisors is an integer number (1651104).

Almost surely, 2^57811040 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 57811040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79252992).

57811040 is an abundant number, since it is smaller than the sum of its proper divisors (100694944).

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

57811040 is a wasteful number, since it uses less digits than its factorization.

57811040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820 (or 812 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 57811040 is about 7603.3571532580. The cubic root of 57811040 is about 386.6668384198. Note that the first 3 decimals are identical.

The spelling of 57811040 in words is "fifty-seven million, eight hundred eleven thousand, forty".