241645861 has 2 divisors, whose sum is σ = 241645862. Its totient is φ = 241645860.

The previous prime is 241645849. The next prime is 241645891. The reversal of 241645861 is 168546142.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218123361 + 23522500 = 14769^2 + 4850^2 .

It is a cyclic number.

It is not a de Polignac number, because 241645861 - 2¹⁵ = 241613093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 241645861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241645891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120822930 + 120822931.

It is an arithmetic number, because the mean of its divisors is an integer number (120822931).

Almost surely, 2^241645861 is an apocalyptic number.

It is an amenable number.

241645861 is a deficient number, since it is larger than the sum of its proper divisors (1).

241645861 is an equidigital number, since it uses as much as digits as its factorization.

241645861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 37.

The square root of 241645861 is about 15544.9625602637. The cubic root of 241645861 is about 622.8638419642.

The spelling of 241645861 in words is "two hundred forty-one million, six hundred forty-five thousand, eight hundred sixty-one".