56584909 has 4 divisors (see below), whose sum is σ = 56643804. Its totient is φ = 56526016.

The previous prime is 56584897. The next prime is 56584921. The reversal of 56584909 is 90948565.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90948565 = 5 ⋅18189713.

It is an interprime number because it is at equal distance from previous prime (56584897) and next prime (56584921).

It can be written as a sum of positive squares in 2 ways, for example, as 46280809 + 10304100 = 6803^2 + 3210^2 .

It is a cyclic number.

It is not a de Polignac number, because 56584909 - 2¹³ = 56576717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56584949) 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, 27982 + ... + 29935.

It is an arithmetic number, because the mean of its divisors is an integer number (14160951).

Almost surely, 2^56584909 is an apocalyptic number.

It is an amenable number.

56584909 is a deficient number, since it is larger than the sum of its proper divisors (58895).

56584909 is an equidigital number, since it uses as much as digits as its factorization.

56584909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58894.

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 56584909 is about 7522.2941314469. The cubic root of 56584909 is about 383.9136384383.

The spelling of 56584909 in words is "fifty-six million, five hundred eighty-four thousand, nine hundred nine".