10523215 has 4 divisors (see below), whose sum is σ = 12627864. Its totient is φ = 8418568.

The previous prime is 10523209. The next prime is 10523251. The reversal of 10523215 is 51232501.

10523215 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51232501 = 5381 ⋅9521.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10523215 is a prime.

It is a super-2 number, since 2×10523215² = 221476107872450, 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 = 10523192 and 10523201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1052317 + ... + 1052326.

It is an arithmetic number, because the mean of its divisors is an integer number (3156966).

Almost surely, 2^10523215 is an apocalyptic number.

10523215 is a deficient number, since it is larger than the sum of its proper divisors (2104649).

10523215 is an equidigital number, since it uses as much as digits as its factorization.

10523215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104648.

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

The square root of 10523215 is about 3243.9505236671. The cubic root of 10523215 is about 219.1372200089.

Adding to 10523215 its reverse (51232501), we get a palindrome (61755716).

The spelling of 10523215 in words is "ten million, five hundred twenty-three thousand, two hundred fifteen".