57004447 has 4 divisors (see below), whose sum is σ = 57049696. Its totient is φ = 56959200.

The previous prime is 57004433. The next prime is 57004469. The reversal of 57004447 is 74440075.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57004447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57004747) 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, 20679 + ... + 23272.

It is an arithmetic number, because the mean of its divisors is an integer number (14262424).

Almost surely, 2^57004447 is an apocalyptic number.

57004447 is a deficient number, since it is larger than the sum of its proper divisors (45249).

57004447 is a wasteful number, since it uses less digits than its factorization.

57004447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45248.

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 57004447 is about 7550.1289392963. The cubic root of 57004447 is about 384.8601212209.

The spelling of 57004447 in words is "fifty-seven million, four thousand, four hundred forty-seven".