56827009 has 4 divisors (see below), whose sum is σ = 56950740. Its totient is φ = 56703280.

The previous prime is 56827007. The next prime is 56827013. The reversal of 56827009 is 90072865.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29942784 + 26884225 = 5472^2 + 5185^2 .

It is a cyclic number.

It is not a de Polignac number, because 56827009 - 2¹ = 56827007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56827003) 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, 61174 + ... + 62095.

It is an arithmetic number, because the mean of its divisors is an integer number (14237685).

Almost surely, 2^56827009 is an apocalyptic number.

It is an amenable number.

56827009 is a deficient number, since it is larger than the sum of its proper divisors (123731).

56827009 is a wasteful number, since it uses less digits than its factorization.

56827009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123730.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 56827009 is about 7538.3691207051. The cubic root of 56827009 is about 384.4603875694.

The spelling of 56827009 in words is "fifty-six million, eight hundred twenty-seven thousand, nine".