241565881 has 2 divisors, whose sum is σ = 241565882. Its totient is φ = 241565880.

The previous prime is 241565879. The next prime is 241565893. The reversal of 241565881 is 188565142.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213306025 + 28259856 = 14605^2 + 5316^2 .

It is a cyclic number.

It is not a de Polignac number, because 241565881 - 2¹ = 241565879 is a prime.

It is a super-2 number, since 2×241565881² = 116708149726612322, which contains 22 as substring.

Together with 241565879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (241565851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120782940 + 120782941.

It is an arithmetic number, because the mean of its divisors is an integer number (120782941).

Almost surely, 2^241565881 is an apocalyptic number.

It is an amenable number.

241565881 is a deficient number, since it is larger than the sum of its proper divisors (1).

241565881 is an equidigital number, since it uses as much as digits as its factorization.

241565881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 76800, while the sum is 40.

The square root of 241565881 is about 15542.3898098072. The cubic root of 241565881 is about 622.7951158443.

The spelling of 241565881 in words is "two hundred forty-one million, five hundred sixty-five thousand, eight hundred eighty-one".