56575947 has 4 divisors (see below), whose sum is σ = 75434600. Its totient is φ = 37717296.

The previous prime is 56575933. The next prime is 56575951. The reversal of 56575947 is 74957565.

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

It is not a de Polignac number, because 56575947 - 2⁷ = 56575819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56575896 and 56575905.

It is not an unprimeable number, because it can be changed into a prime (56575907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9429322 + ... + 9429327.

It is an arithmetic number, because the mean of its divisors is an integer number (18858650).

Almost surely, 2^56575947 is an apocalyptic number.

56575947 is a deficient number, since it is larger than the sum of its proper divisors (18858653).

56575947 is a wasteful number, since it uses less digits than its factorization.

56575947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18858652.

The product of its digits is 1323000, while the sum is 48.

The square root of 56575947 is about 7521.6984119280. The cubic root of 56575947 is about 383.8933691017.

The spelling of 56575947 in words is "fifty-six million, five hundred seventy-five thousand, nine hundred forty-seven".