232220551 has 2 divisors, whose sum is σ = 232220552. Its totient is φ = 232220550.

The previous prime is 232220543. The next prime is 232220587. The reversal of 232220551 is 155022232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 232220551 - 2³ = 232220543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232220531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116110275 + 116110276.

It is an arithmetic number, because the mean of its divisors is an integer number (116110276).

Almost surely, 2^232220551 is an apocalyptic number.

232220551 is a deficient number, since it is larger than the sum of its proper divisors (1).

232220551 is an equidigital number, since it uses as much as digits as its factorization.

232220551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 232220551 is about 15238.7844331495. The cubic root of 232220551 is about 614.6580168442.

Adding to 232220551 its reverse (155022232), we get a palindrome (387242783).

The spelling of 232220551 in words is "two hundred thirty-two million, two hundred twenty thousand, five hundred fifty-one".