10515223 has 4 divisors (see below), whose sum is σ = 10523128. Its totient is φ = 10507320.

The previous prime is 10515217. The next prime is 10515233. The reversal of 10515223 is 32251501.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 32251501 = 31 ⋅1040371.

It is a cyclic number.

It is not a de Polignac number, because 10515223 - 2⁵ = 10515191 is a prime.

It is a super-2 number, since 2×10515223² = 221139829479458, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10515223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10515203) 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, 1413 + ... + 4798.

It is an arithmetic number, because the mean of its divisors is an integer number (2630782).

Almost surely, 2^10515223 is an apocalyptic number.

10515223 is a deficient number, since it is larger than the sum of its proper divisors (7905).

10515223 is an equidigital number, since it uses as much as digits as its factorization.

10515223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7904.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 10515223 is about 3242.7184583309. The cubic root of 10515223 is about 219.0817303697.

Adding to 10515223 its reverse (32251501), we get a palindrome (42766724).

The spelling of 10515223 in words is "ten million, five hundred fifteen thousand, two hundred twenty-three".