57147427 has 4 divisors (see below), whose sum is σ = 57434800. Its totient is φ = 56860056.

The previous prime is 57147413. The next prime is 57147437. The reversal of 57147427 is 72474175.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57147427 - 2¹¹ = 57145379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57147437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143388 + ... + 143785.

It is an arithmetic number, because the mean of its divisors is an integer number (14358700).

Almost surely, 2^57147427 is an apocalyptic number.

57147427 is a deficient number, since it is larger than the sum of its proper divisors (287373).

57147427 is a wasteful number, since it uses less digits than its factorization.

57147427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287372.

The product of its digits is 54880, while the sum is 37.

The square root of 57147427 is about 7559.5917217797. The cubic root of 57147427 is about 385.1816245426.

The spelling of 57147427 in words is "fifty-seven million, one hundred forty-seven thousand, four hundred twenty-seven".