241288991 has 2 divisors, whose sum is σ = 241288992. Its totient is φ = 241288990.

The previous prime is 241288987. The next prime is 241289003. The reversal of 241288991 is 199882142.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 241288991 - 2² = 241288987 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241288291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120644495 + 120644496.

It is an arithmetic number, because the mean of its divisors is an integer number (120644496).

Almost surely, 2^241288991 is an apocalyptic number.

241288991 is a deficient number, since it is larger than the sum of its proper divisors (1).

241288991 is an equidigital number, since it uses as much as digits as its factorization.

241288991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 44.

The square root of 241288991 is about 15533.4796809987. The cubic root of 241288991 is about 622.5570694387.

The spelling of 241288991 in words is "two hundred forty-one million, two hundred eighty-eight thousand, nine hundred ninety-one".