223545330551 has 2 divisors, whose sum is σ = 223545330552. Its totient is φ = 223545330550.

The previous prime is 223545330539. The next prime is 223545330553. The reversal of 223545330551 is 155033545322.

223545330551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223545330551 is a prime.

It is a super-2 number, since 2×223545330551² (a number of 23 digits) contains 22 as substring.

Together with 223545330553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223545330553) 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 as a sum of consecutive naturals, namely, 111772665275 + 111772665276.

It is an arithmetic number, because the mean of its divisors is an integer number (111772665276).

Almost surely, 2^223545330551 is an apocalyptic number.

223545330551 is a deficient number, since it is larger than the sum of its proper divisors (1).

223545330551 is an equidigital number, since it uses as much as digits as its factorization.

223545330551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270000, while the sum is 38.

Adding to 223545330551 its reverse (155033545322), we get a palindrome (378578875873).

The spelling of 223545330551 in words is "two hundred twenty-three billion, five hundred forty-five million, three hundred thirty thousand, five hundred fifty-one".