102661241 has 2 divisors, whose sum is σ = 102661242. Its totient is φ = 102661240.

The previous prime is 102661217. The next prime is 102661297. The reversal of 102661241 is 142166201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89491600 + 13169641 = 9460^2 + 3629^2 .

It is a cyclic number.

It is not a de Polignac number, because 102661241 - 2⁶ = 102661177 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (102663241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51330620 + 51330621.

It is an arithmetic number, because the mean of its divisors is an integer number (51330621).

Almost surely, 2^102661241 is an apocalyptic number.

It is an amenable number.

102661241 is a deficient number, since it is larger than the sum of its proper divisors (1).

102661241 is an equidigital number, since it uses as much as digits as its factorization.

102661241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 102661241 is about 10132.1883618496. The cubic root of 102661241 is about 468.2403509494.

The spelling of 102661241 in words is "one hundred two million, six hundred sixty-one thousand, two hundred forty-one".