57785385 has 16 divisors (see below), whose sum is σ = 105664896. Its totient is φ = 26416128.

The previous prime is 57785383. The next prime is 57785393. The reversal of 57785385 is 58358775.

It is a happy number.

It is not a de Polignac number, because 57785385 - 2¹ = 57785383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57785383) 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, 275064 + ... + 275273.

It is an arithmetic number, because the mean of its divisors is an integer number (6604056).

Almost surely, 2^57785385 is an apocalyptic number.

It is an amenable number.

57785385 is a deficient number, since it is larger than the sum of its proper divisors (47879511).

57785385 is a wasteful number, since it uses less digits than its factorization.

57785385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550352.

The product of its digits is 1176000, while the sum is 48.

The square root of 57785385 is about 7601.6698823351. The cubic root of 57785385 is about 386.6096324749.

The spelling of 57785385 in words is "fifty-seven million, seven hundred eighty-five thousand, three hundred eighty-five".