232520551 has 2 divisors, whose sum is σ = 232520552. Its totient is φ = 232520550.

The previous prime is 232520531. The next prime is 232520591. The reversal of 232520551 is 155025232.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 232520551 - 2⁹ = 232520039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232520531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116260275 + 116260276.

It is an arithmetic number, because the mean of its divisors is an integer number (116260276).

Almost surely, 2^232520551 is an apocalyptic number.

232520551 is a deficient number, since it is larger than the sum of its proper divisors (1).

232520551 is an equidigital number, since it uses as much as digits as its factorization.

232520551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 232520551 is about 15248.6245609235. The cubic root of 232520551 is about 614.9225901202.

Adding to 232520551 its reverse (155025232), we get a palindrome (387545783).

The spelling of 232520551 in words is "two hundred thirty-two million, five hundred twenty thousand, five hundred fifty-one".