57478187 has 8 divisors (see below), whose sum is σ = 63409920. Its totient is φ = 51762240.

The previous prime is 57478163. The next prime is 57478193. The reversal of 57478187 is 78187475.

57478187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57478187 - 2²² = 53283883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57478117) by changing a digit.

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, 53387 + ... + 54452.

It is an arithmetic number, because the mean of its divisors is an integer number (7926240).

Almost surely, 2^57478187 is an apocalyptic number.

57478187 is a deficient number, since it is larger than the sum of its proper divisors (5931733).

57478187 is a wasteful number, since it uses less digits than its factorization.

57478187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107893.

The product of its digits is 439040, while the sum is 47.

The square root of 57478187 is about 7581.4370009913. The cubic root of 57478187 is about 385.9233182799.

The spelling of 57478187 in words is "fifty-seven million, four hundred seventy-eight thousand, one hundred eighty-seven".