10497821 has 4 divisors (see below), whose sum is σ = 10954272. Its totient is φ = 10041372.

The previous prime is 10497749. The next prime is 10497827. The reversal of 10497821 is 12879401.

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 a de Polignac number, because none of the positive numbers 2^k-10497821 is a prime.

It is a super-3 number, since 3×10497821³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10497827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228191 + ... + 228236.

It is an arithmetic number, because the mean of its divisors is an integer number (2738568).

Almost surely, 2^10497821 is an apocalyptic number.

It is an amenable number.

10497821 is a deficient number, since it is larger than the sum of its proper divisors (456451).

10497821 is an equidigital number, since it uses as much as digits as its factorization.

10497821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456450.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 10497821 is about 3240.0341047588. The cubic root of 10497821 is about 218.9608083715.

The spelling of 10497821 in words is "ten million, four hundred ninety-seven thousand, eight hundred twenty-one".