56530709 has 4 divisors (see below), whose sum is σ = 58058604. Its totient is φ = 55002816.

The previous prime is 56530679. The next prime is 56530751. The reversal of 56530709 is 90703565.

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 28121809 + 28408900 = 5303^2 + 5330^2 .

It is a cyclic number.

It is not a de Polignac number, because 56530709 - 2¹⁶ = 56465173 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 (56530769) 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, 763892 + ... + 763965.

It is an arithmetic number, because the mean of its divisors is an integer number (14514651).

Almost surely, 2^56530709 is an apocalyptic number.

It is an amenable number.

56530709 is a deficient number, since it is larger than the sum of its proper divisors (1527895).

56530709 is a wasteful number, since it uses less digits than its factorization.

56530709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527894.

The product of its (nonzero) digits is 28350, while the sum is 35.

The square root of 56530709 is about 7518.6906439885. The cubic root of 56530709 is about 383.7910217264.

The spelling of 56530709 in words is "fifty-six million, five hundred thirty thousand, seven hundred nine".