57000206 has 4 divisors (see below), whose sum is σ = 85500312. Its totient is φ = 28500102.

The previous prime is 57000197. The next prime is 57000211. The reversal of 57000206 is 60200075.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14250050 + ... + 14250053.

It is an arithmetic number, because the mean of its divisors is an integer number (21375078).

Almost surely, 2^57000206 is an apocalyptic number.

57000206 is a deficient number, since it is larger than the sum of its proper divisors (28500106).

57000206 is a wasteful number, since it uses less digits than its factorization.

57000206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28500105.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 57000206 is about 7549.8480779417. The cubic root of 57000206 is about 384.8505767477.

The spelling of 57000206 in words is "fifty-seven million, two hundred six", and thus it is an aban number.