232778551 has 2 divisors, whose sum is σ = 232778552. Its totient is φ = 232778550.

The previous prime is 232778527. The next prime is 232778587. The reversal of 232778551 is 155877232.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 232778551 - 2¹¹ = 232776503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232773551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116389275 + 116389276.

It is an arithmetic number, because the mean of its divisors is an integer number (116389276).

Almost surely, 2^232778551 is an apocalyptic number.

232778551 is a deficient number, since it is larger than the sum of its proper divisors (1).

232778551 is an equidigital number, since it uses as much as digits as its factorization.

232778551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117600, while the sum is 40.

The square root of 232778551 is about 15257.0819949294. The cubic root of 232778551 is about 615.1499411873.

The spelling of 232778551 in words is "two hundred thirty-two million, seven hundred seventy-eight thousand, five hundred fifty-one".