56172833903 has 4 divisors (see below), whose sum is σ = 56192539608. Its totient is φ = 56153128200.

The previous prime is 56172833897. The next prime is 56172833909. The reversal of 56172833903 is 30933827165.

56172833903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (56172833897) and next prime (56172833909).

It is a cyclic number.

It is not a de Polignac number, because 56172833903 - 2³⁰ = 55099092079 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 (56172833909) 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, 9848576 + ... + 9854277.

It is an arithmetic number, because the mean of its divisors is an integer number (14048134902).

Almost surely, 2^56172833903 is an apocalyptic number.

56172833903 is a deficient number, since it is larger than the sum of its proper divisors (19705705).

56172833903 is a wasteful number, since it uses less digits than its factorization.

56172833903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19705704.

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 56172833903 in words is "fifty-six billion, one hundred seventy-two million, eight hundred thirty-three thousand, nine hundred three".