57389047 has 4 divisors (see below), whose sum is σ = 58723720. Its totient is φ = 56054376.

The previous prime is 57389041. The next prime is 57389077. The reversal of 57389047 is 74098375.

It is a happy number.

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 57389047 - 2³ = 57389039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 1334629 = 57389047 / (5 + 7 + 3 + 8 + 9 + 0 + 4 + 7).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57388994 and 57389012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57389041) 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, 667272 + ... + 667357.

It is an arithmetic number, because the mean of its divisors is an integer number (14680930).

Almost surely, 2^57389047 is an apocalyptic number.

57389047 is a deficient number, since it is larger than the sum of its proper divisors (1334673).

57389047 is a wasteful number, since it uses less digits than its factorization.

57389047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334672.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 57389047 is about 7575.5558871940. Note that the first 3 decimals coincide. The cubic root of 57389047 is about 385.7237121022.

The spelling of 57389047 in words is "fifty-seven million, three hundred eighty-nine thousand, forty-seven".