10505491 has 2 divisors, whose sum is σ = 10505492. Its totient is φ = 10505490.

The previous prime is 10505483. The next prime is 10505527. The reversal of 10505491 is 19450501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10505491 - 2³ = 10505483 is a prime.

It is a super-2 number, since 2×10505491² = 220730682302162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10505401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5252745 + 5252746.

It is an arithmetic number, because the mean of its divisors is an integer number (5252746).

Almost surely, 2^10505491 is an apocalyptic number.

10505491 is a deficient number, since it is larger than the sum of its proper divisors (1).

10505491 is an equidigital number, since it uses as much as digits as its factorization.

10505491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 10505491 is about 3241.2175181558. The cubic root of 10505491 is about 219.0141216751.

Adding to 10505491 its reverse (19450501), we get a palindrome (29955992).

The spelling of 10505491 in words is "ten million, five hundred five thousand, four hundred ninety-one".