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BaseRepresentation
bin111010111110011001
3110021100201
4322332121
530212221
65102201
72024155
oct727631
9407321
10241561
11155541
12b7961
1385c48
1464065
154b891
hex3af99

241561 has 2 divisors, whose sum is σ = 241562. Its totient is φ = 241560.

The previous prime is 241559. The next prime is 241567. The reversal of 241561 is 165142.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193600 + 47961 = 440^2 + 219^2 .

It is a cyclic number.

It is not a de Polignac number, because 241561 - 21 = 241559 is a prime.

Together with 241559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (241567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120780 + 120781.

It is an arithmetic number, because the mean of its divisors is an integer number (120781).

2241561 is an apocalyptic number.

It is an amenable number.

241561 is a deficient number, since it is larger than the sum of its proper divisors (1).

241561 is an equidigital number, since it uses as much as digits as its factorization.

241561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 19.

The square root of 241561 is about 491.4885553093. The cubic root of 241561 is about 62.2790921152.

The spelling of 241561 in words is "two hundred forty-one thousand, five hundred sixty-one".