241561961 has 2 divisors, whose sum is σ = 241561962. Its totient is φ = 241561960.

The previous prime is 241561861. The next prime is 241561963. The reversal of 241561961 is 169165142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173185600 + 68376361 = 13160^2 + 8269^2 .

It is a cyclic number.

It is not a de Polignac number, because 241561961 - 2²² = 237367657 is a prime.

Together with 241561963, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (241561963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120780980 + 120780981.

It is an arithmetic number, because the mean of its divisors is an integer number (120780981).

Almost surely, 2^241561961 is an apocalyptic number.

It is an amenable number.

241561961 is a deficient number, since it is larger than the sum of its proper divisors (1).

241561961 is an equidigital number, since it uses as much as digits as its factorization.

241561961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 35.

The square root of 241561961 is about 15542.2637025628. The cubic root of 241561961 is about 622.7917470324.

The spelling of 241561961 in words is "two hundred forty-one million, five hundred sixty-one thousand, nine hundred sixty-one".