56353009 has 4 divisors (see below), whose sum is σ = 58170880. Its totient is φ = 54535140.

The previous prime is 56353001. The next prime is 56353021. The reversal of 56353009 is 90035365.

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 a cyclic number.

It is not a de Polignac number, because 56353009 - 2³ = 56353001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 1817839 = 56353009 / (5 + 6 + 3 + 5 + 3 + 0 + 0 + 9).

It is not an unprimeable number, because it can be changed into a prime (56353001) 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, 908889 + ... + 908950.

It is an arithmetic number, because the mean of its divisors is an integer number (14542720).

Almost surely, 2^56353009 is an apocalyptic number.

It is an amenable number.

56353009 is a deficient number, since it is larger than the sum of its proper divisors (1817871).

56353009 is a wasteful number, since it uses less digits than its factorization.

56353009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817870.

The product of its (nonzero) digits is 12150, while the sum is 31.

The square root of 56353009 is about 7506.8641255853. The cubic root of 56353009 is about 383.3884602928.

The spelling of 56353009 in words is "fifty-six million, three hundred fifty-three thousand, nine".