10505291 has 2 divisors, whose sum is σ = 10505292. Its totient is φ = 10505290.

The previous prime is 10505281. The next prime is 10505317. The reversal of 10505291 is 19250501.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10505291 is a prime.

It is a super-2 number, since 2×10505291² = 220722277989362, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10505281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5252645 + 5252646.

It is an arithmetic number, because the mean of its divisors is an integer number (5252646).

Almost surely, 2^10505291 is an apocalyptic number.

10505291 is a deficient number, since it is larger than the sum of its proper divisors (1).

10505291 is an equidigital number, since it uses as much as digits as its factorization.

10505291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 10505291 is about 3241.1866654051. The cubic root of 10505291 is about 219.0127318272.

Adding to 10505291 its reverse (19250501), we get a palindrome (29755792).

The spelling of 10505291 in words is "ten million, five hundred five thousand, two hundred ninety-one".