56542320223 has 4 divisors (see below), whose sum is σ = 56552736688. Its totient is φ = 56531903760.

The previous prime is 56542320179. The next prime is 56542320239. The reversal of 56542320223 is 32202324565.

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

It is a cyclic number.

It is not a de Polignac number, because 56542320223 - 2¹³ = 56542312031 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 (56542320323) 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, 5200086 + ... + 5210947.

It is an arithmetic number, because the mean of its divisors is an integer number (14138184172).

Almost surely, 2^56542320223 is an apocalyptic number.

56542320223 is a deficient number, since it is larger than the sum of its proper divisors (10416465).

56542320223 is a wasteful number, since it uses less digits than its factorization.

56542320223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10416464.

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 56542320223 its reverse (32202324565), we get a palindrome (88744644788).

The spelling of 56542320223 in words is "fifty-six billion, five hundred forty-two million, three hundred twenty thousand, two hundred twenty-three".