56235209797 has 4 divisors (see below), whose sum is σ = 60560995180. Its totient is φ = 51909424416.

The previous prime is 56235209773. The next prime is 56235209801. The reversal of 56235209797 is 79790253265.

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 16261605441 + 39973604356 = 127521^2 + 199934^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56235209797 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 (56235209707) 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, 2162892672 + ... + 2162892697.

It is an arithmetic number, because the mean of its divisors is an integer number (15140248795).

Almost surely, 2^56235209797 is an apocalyptic number.

It is an amenable number.

56235209797 is a deficient number, since it is larger than the sum of its proper divisors (4325785383).

56235209797 is a wasteful number, since it uses less digits than its factorization.

56235209797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4325785382.

The product of its (nonzero) digits is 7144200, while the sum is 55.

The spelling of 56235209797 in words is "fifty-six billion, two hundred thirty-five million, two hundred nine thousand, seven hundred ninety-seven".