56103133321 has 9 divisors (see below), whose sum is σ = 59601723861. Its totient is φ = 52799159232.

The previous prime is 56103133271. The next prime is 56103133327. The reversal of 56103133321 is 12333130165.

The square root of 56103133321 is 236861.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 41233769721 + 14869363600 = 203061^2 + 121940^2 .

It is a de Polignac number, because none of the positive numbers 2^k-56103133321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56103133321.

It is not an unprimeable number, because it can be changed into a prime (56103133327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4019671 + ... + 4033603.

Almost surely, 2^56103133321 is an apocalyptic number.

56103133321 is the 236861-st square number.

56103133321 is the 118431-st centered octagonal number.

It is an amenable number.

56103133321 is a deficient number, since it is larger than the sum of its proper divisors (3498590540).

56103133321 is an frugal number, since it uses more digits than its factorization.

56103133321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27900 (or 13950 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 28.

Adding to 56103133321 its reverse (12333130165), we get a palindrome (68436263486).

The spelling of 56103133321 in words is "fifty-six billion, one hundred three million, one hundred thirty-three thousand, three hundred twenty-one".