57247906 has 8 divisors (see below), whose sum is σ = 85953024. Its totient is φ = 28596900.

The previous prime is 57247901. The next prime is 57247919. The reversal of 57247906 is 60974275.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (57247901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10770 + ... + 15181.

It is an arithmetic number, because the mean of its divisors is an integer number (10744128).

Almost surely, 2^57247906 is an apocalyptic number.

57247906 is a deficient number, since it is larger than the sum of its proper divisors (28705118).

57247906 is a wasteful number, since it uses less digits than its factorization.

57247906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27056.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 57247906 is about 7566.2345985305. The cubic root of 57247906 is about 385.4072398545.

The spelling of 57247906 in words is "fifty-seven million, two hundred forty-seven thousand, nine hundred six".