291041 has 2 divisors, whose sum is σ = 291042. Its totient is φ = 291040.

The previous prime is 291037. The next prime is 291043. The reversal of 291041 is 140192.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 271441 + 19600 = 521^2 + 140^2 .

It is a cyclic number.

It is not a de Polignac number, because 291041 - 2² = 291037 is a prime.

It is a Sophie Germain prime.

Together with 291043, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (291043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145520 + 145521.

It is an arithmetic number, because the mean of its divisors is an integer number (145521).

2²⁹¹⁰⁴¹ is an apocalyptic number.

It is an amenable number.

291041 is a deficient number, since it is larger than the sum of its proper divisors (1).

291041 is an equidigital number, since it uses as much as digits as its factorization.

291041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 291041 is about 539.4821591119. The cubic root of 291041 is about 66.2701659270.

The spelling of 291041 in words is "two hundred ninety-one thousand, forty-one".