243501151 has 2 divisors, whose sum is σ = 243501152. Its totient is φ = 243501150.

The previous prime is 243501113. The next prime is 243501179. The reversal of 243501151 is 151105342.

It is a happy number.

243501151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243501151 - 2¹¹ = 243499103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243502151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121750575 + 121750576.

It is an arithmetic number, because the mean of its divisors is an integer number (121750576).

Almost surely, 2^243501151 is an apocalyptic number.

243501151 is a deficient number, since it is larger than the sum of its proper divisors (1).

243501151 is an equidigital number, since it uses as much as digits as its factorization.

243501151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 243501151 is about 15604.5234147025. The cubic root of 243501151 is about 624.4538383910.

Adding to 243501151 its reverse (151105342), we get a palindrome (394606493).

The spelling of 243501151 in words is "two hundred forty-three million, five hundred one thousand, one hundred fifty-one".