233040551 has 2 divisors, whose sum is σ = 233040552. Its totient is φ = 233040550.

The previous prime is 233040503. The next prime is 233040553. The reversal of 233040551 is 155040332.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233040551 is a prime.

It is a Sophie Germain prime.

Together with 233040553, 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 (233040553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116520275 + 116520276.

It is an arithmetic number, because the mean of its divisors is an integer number (116520276).

Almost surely, 2^233040551 is an apocalyptic number.

233040551 is a deficient number, since it is larger than the sum of its proper divisors (1).

233040551 is an equidigital number, since it uses as much as digits as its factorization.

233040551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 233040551 is about 15265.6657568545. The cubic root of 233040551 is about 615.3806452256.

Adding to 233040551 its reverse (155040332), we get a palindrome (388080883).

The spelling of 233040551 in words is "two hundred thirty-three million, forty thousand, five hundred fifty-one".