10491321 has 8 divisors (see below), whose sum is σ = 14225760. Its totient is φ = 6875552.

The previous prime is 10491319. The next prime is 10491331. The reversal of 10491321 is 12319401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10491321 - 2¹ = 10491319 is a prime.

It is a super-2 number, since 2×10491321² = 220135632650082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10491331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29460 + ... + 29813.

It is an arithmetic number, because the mean of its divisors is an integer number (1778220).

Almost surely, 2^10491321 is an apocalyptic number.

It is an amenable number.

10491321 is a deficient number, since it is larger than the sum of its proper divisors (3734439).

10491321 is an equidigital number, since it uses as much as digits as its factorization.

10491321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59335.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 10491321 is about 3239.0308735793. The cubic root of 10491321 is about 218.9156072737.

The spelling of 10491321 in words is "ten million, four hundred ninety-one thousand, three hundred twenty-one".