56211605533 has 4 divisors (see below), whose sum is σ = 56221796160. Its totient is φ = 56201414908.

The previous prime is 56211605521. The next prime is 56211605537. The reversal of 56211605533 is 33550611265.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56211605533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56211605492 and 56211605501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56211605537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5087035 + ... + 5098072.

It is an arithmetic number, because the mean of its divisors is an integer number (14055449040).

Almost surely, 2^56211605533 is an apocalyptic number.

It is an amenable number.

56211605533 is a deficient number, since it is larger than the sum of its proper divisors (10190627).

56211605533 is a wasteful number, since it uses less digits than its factorization.

56211605533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10190626.

The product of its (nonzero) digits is 81000, while the sum is 37.

The spelling of 56211605533 in words is "fifty-six billion, two hundred eleven million, six hundred five thousand, five hundred thirty-three".