56163320 has 32 divisors (see below), whose sum is σ = 130446720. Its totient is φ = 21740160.

The previous prime is 56163319. The next prime is 56163323. The reversal of 56163320 is 2336165.

It is a self number, because there is not a number n which added to its sum of digits gives 56163320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56163323) 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 7 ways as a sum of consecutive naturals, for example, 21407 + ... + 23886.

It is an arithmetic number, because the mean of its divisors is an integer number (4076460).

Almost surely, 2^56163320 is an apocalyptic number.

It is an amenable number.

56163320 is an abundant number, since it is smaller than the sum of its proper divisors (74283400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56163320 is a wasteful number, since it uses less digits than its factorization.

56163320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45335 (or 45331 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 56163320 is about 7494.2191054172. The cubic root of 56163320 is about 382.9578040487.

Adding to 56163320 its reverse (2336165), we get a palindrome (58499485).

The spelling of 56163320 in words is "fifty-six million, one hundred sixty-three thousand, three hundred twenty".