223142551 has 2 divisors, whose sum is σ = 223142552. Its totient is φ = 223142550.

The previous prime is 223142539. The next prime is 223142581. The reversal of 223142551 is 155241322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 223142551 - 2⁵ = 223142519 is a prime.

It is a super-3 number, since 3×223142551³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223142581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111571275 + 111571276.

It is an arithmetic number, because the mean of its divisors is an integer number (111571276).

Almost surely, 2^223142551 is an apocalyptic number.

223142551 is a deficient number, since it is larger than the sum of its proper divisors (1).

223142551 is an equidigital number, since it uses as much as digits as its factorization.

223142551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 25.

The square root of 223142551 is about 14937.9567210512. The cubic root of 223142551 is about 606.5418867804.

Adding to 223142551 its reverse (155241322), we get a palindrome (378383873).

The spelling of 223142551 in words is "two hundred twenty-three million, one hundred forty-two thousand, five hundred fifty-one".