56838009 has 4 divisors (see below), whose sum is σ = 75784016. Its totient is φ = 37892004.

The previous prime is 56838007. The next prime is 56838011. The reversal of 56838009 is 90083865.

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 an interprime number because it is at equal distance from previous prime (56838007) and next prime (56838011).

It is not a de Polignac number, because 56838009 - 2¹ = 56838007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56838007) 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, 9472999 + ... + 9473004.

It is an arithmetic number, because the mean of its divisors is an integer number (18946004).

Almost surely, 2^56838009 is an apocalyptic number.

It is an amenable number.

56838009 is a deficient number, since it is larger than the sum of its proper divisors (18946007).

56838009 is a wasteful number, since it uses less digits than its factorization.

56838009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18946006.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 56838009 is about 7539.0986861826. The cubic root of 56838009 is about 384.4851926253.

The spelling of 56838009 in words is "fifty-six million, eight hundred thirty-eight thousand, nine".