56803209 has 8 divisors (see below), whose sum is σ = 76134912. Its totient is φ = 37670160.

The previous prime is 56803189. The next prime is 56803211. The reversal of 56803209 is 90230865.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56803209 - 2¹¹ = 56801161 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56803209.

It is not an unprimeable number, because it can be changed into a prime (56803249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48994 + ... + 50139.

It is an arithmetic number, because the mean of its divisors is an integer number (9516864).

Almost surely, 2^56803209 is an apocalyptic number.

It is an amenable number.

56803209 is a deficient number, since it is larger than the sum of its proper divisors (19331703).

56803209 is a wasteful number, since it uses less digits than its factorization.

56803209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99327.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 56803209 is about 7536.7903646048. The cubic root of 56803209 is about 384.4067074908.

The spelling of 56803209 in words is "fifty-six million, eight hundred three thousand, two hundred nine".