56515550053 has 4 divisors (see below), whose sum is σ = 56575610028. Its totient is φ = 56455490080.

The previous prime is 56515550051. The next prime is 56515550081. The reversal of 56515550053 is 35005551565.

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 46947188929 + 9568361124 = 216673^2 + 97818^2 .

It is a cyclic number.

It is not a de Polignac number, because 56515550053 - 2¹ = 56515550051 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56515549988 and 56515550015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56515550051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30028576 + ... + 30030457.

It is an arithmetic number, because the mean of its divisors is an integer number (14143902507).

Almost surely, 2^56515550053 is an apocalyptic number.

It is an amenable number.

56515550053 is a deficient number, since it is larger than the sum of its proper divisors (60059975).

56515550053 is an equidigital number, since it uses as much as digits as its factorization.

56515550053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60059974.

The product of its (nonzero) digits is 281250, while the sum is 40.

The spelling of 56515550053 in words is "fifty-six billion, five hundred fifteen million, five hundred fifty thousand, fifty-three".