57811416 has 64 divisors (see below), whose sum is σ = 156979200. Its totient is φ = 17635968.

The previous prime is 57811387. The next prime is 57811421. The reversal of 57811416 is 61411875.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38895 + ... + 40353.

It is an arithmetic number, because the mean of its divisors is an integer number (2452800).

Almost surely, 2^57811416 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 57811416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78489600).

57811416 is an abundant number, since it is smaller than the sum of its proper divisors (99167784).

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

57811416 is a wasteful number, since it uses less digits than its factorization.

57811416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608 (or 1604 counting only the distinct ones).

The product of its digits is 6720, while the sum is 33.

The square root of 57811416 is about 7603.3818791377. The cubic root of 57811416 is about 386.6676767050.

The spelling of 57811416 in words is "fifty-seven million, eight hundred eleven thousand, four hundred sixteen".