223122551 has 2 divisors, whose sum is σ = 223122552. Its totient is φ = 223122550.

The previous prime is 223122547. The next prime is 223122553. The reversal of 223122551 is 155221322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 223122551 - 2² = 223122547 is a prime.

It is a super-3 number, since 3×223122551³ (a number of 26 digits) contains 333 as substring.

Together with 223122553, 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 (223122553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111561275 + 111561276.

It is an arithmetic number, because the mean of its divisors is an integer number (111561276).

Almost surely, 2^223122551 is an apocalyptic number.

223122551 is a deficient number, since it is larger than the sum of its proper divisors (1).

223122551 is an equidigital number, since it uses as much as digits as its factorization.

223122551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 23.

The square root of 223122551 is about 14937.2872704518. The cubic root of 223122551 is about 606.5237650310.

Adding to 223122551 its reverse (155221322), we get a palindrome (378343873).

The spelling of 223122551 in words is "two hundred twenty-three million, one hundred twenty-two thousand, five hundred fifty-one".