223545332551 has 2 divisors, whose sum is σ = 223545332552. Its totient is φ = 223545332550.

The previous prime is 223545332533. The next prime is 223545332579. The reversal of 223545332551 is 155233545322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 223545332551 - 2⁹ = 223545332039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223545330551) 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 as a sum of consecutive naturals, namely, 111772666275 + 111772666276.

It is an arithmetic number, because the mean of its divisors is an integer number (111772666276).

Almost surely, 2^223545332551 is an apocalyptic number.

223545332551 is a deficient number, since it is larger than the sum of its proper divisors (1).

223545332551 is an equidigital number, since it uses as much as digits as its factorization.

223545332551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540000, while the sum is 40.

Adding to 223545332551 its reverse (155233545322), we get a palindrome (378778877873).

The spelling of 223545332551 in words is "two hundred twenty-three billion, five hundred forty-five million, three hundred thirty-two thousand, five hundred fifty-one".