247241 has 2 divisors, whose sum is σ = 247242. Its totient is φ = 247240.

The previous prime is 247229. The next prime is 247249. The reversal of 247241 is 142742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 246016 + 1225 = 496^2 + 35^2 .

It is a cyclic number.

It is not a de Polignac number, because 247241 - 2¹⁰ = 246217 is a prime.

It is a super-2 number, since 2×247241² = 122256224162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (247249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123620 + 123621.

It is an arithmetic number, because the mean of its divisors is an integer number (123621).

2²⁴⁷²⁴¹ is an apocalyptic number.

It is an amenable number.

247241 is a deficient number, since it is larger than the sum of its proper divisors (1).

247241 is an equidigital number, since it uses as much as digits as its factorization.

247241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 448, while the sum is 20.

The square root of 247241 is about 497.2333456236. The cubic root of 247241 is about 62.7634532511.

Adding to 247241 its reverse (142742), we get a palindrome (389983).

The spelling of 247241 in words is "two hundred forty-seven thousand, two hundred forty-one", and thus it is an iban number.