51223511203 has 4 divisors (see below), whose sum is σ = 51228710368. Its totient is φ = 51218312040.

The previous prime is 51223511147. The next prime is 51223511233. The reversal of 51223511203 is 30211532215.

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 51223511203 - 2⁹ = 51223510691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51223511233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2584776 + ... + 2604517.

It is an arithmetic number, because the mean of its divisors is an integer number (12807177592).

Almost surely, 2^51223511203 is an apocalyptic number.

51223511203 is a deficient number, since it is larger than the sum of its proper divisors (5199165).

51223511203 is an equidigital number, since it uses as much as digits as its factorization.

51223511203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5199164.

The product of its (nonzero) digits is 1800, while the sum is 25.

The spelling of 51223511203 in words is "fifty-one billion, two hundred twenty-three million, five hundred eleven thousand, two hundred three".