57003809 has 4 divisors (see below), whose sum is σ = 58216704. Its totient is φ = 55790916.

The previous prime is 57003799. The next prime is 57003811. The reversal of 57003809 is 90830075.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57003809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57003889) 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, 606377 + ... + 606470.

It is an arithmetic number, because the mean of its divisors is an integer number (14554176).

Almost surely, 2^57003809 is an apocalyptic number.

It is an amenable number.

57003809 is a deficient number, since it is larger than the sum of its proper divisors (1212895).

57003809 is a wasteful number, since it uses less digits than its factorization.

57003809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212894.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 57003809 is about 7550.0866882440. The cubic root of 57003809 is about 384.8586854167.

The spelling of 57003809 in words is "fifty-seven million, three thousand, eight hundred nine".