10523987 has 4 divisors (see below), whose sum is σ = 10534200. Its totient is φ = 10513776.

The previous prime is 10523977. The next prime is 10523993. The reversal of 10523987 is 78932501.

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.

It is a cyclic number.

It is not a de Polignac number, because 10523987 - 2⁶ = 10523923 is a prime.

It is a super-2 number, since 2×10523987² = 221508604752338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10523917) 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, 3362 + ... + 5687.

It is an arithmetic number, because the mean of its divisors is an integer number (2633550).

Almost surely, 2^10523987 is an apocalyptic number.

10523987 is a deficient number, since it is larger than the sum of its proper divisors (10213).

10523987 is an equidigital number, since it uses as much as digits as its factorization.

10523987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10212.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 10523987 is about 3244.0695122022. The cubic root of 10523987 is about 219.1425786310.

The spelling of 10523987 in words is "ten million, five hundred twenty-three thousand, nine hundred eighty-seven".