10491217 has 4 divisors (see below), whose sum is σ = 11444976. Its totient is φ = 9537460.

The previous prime is 10491181. The next prime is 10491233. The reversal of 10491217 is 71219401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10491217 - 2¹¹ = 10489169 is a prime.

It is a super-2 number, since 2×10491217² = 220131268282178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10491191 and 10491200.

It is not an unprimeable number, because it can be changed into a prime (10491277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476863 + ... + 476884.

It is an arithmetic number, because the mean of its divisors is an integer number (2861244).

Almost surely, 2^10491217 is an apocalyptic number.

It is an amenable number.

10491217 is a deficient number, since it is larger than the sum of its proper divisors (953759).

10491217 is an equidigital number, since it uses as much as digits as its factorization.

10491217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953758.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 10491217 is about 3239.0148193548. The cubic root of 10491217 is about 218.9148839044.

The spelling of 10491217 in words is "ten million, four hundred ninety-one thousand, two hundred seventeen".