10531865 has 8 divisors (see below), whose sum is σ = 12980040. Its totient is φ = 8197632.

The previous prime is 10531849. The next prime is 10531867. The reversal of 10531865 is 56813501.

It can be written as a sum of positive squares in 4 ways, for example, as 444889 + 10086976 = 667^2 + 3176^2 .

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 10531865 - 2⁴ = 10531849 is a prime.

It is a super-2 number, since 2×10531865² = 221840360756450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10531867) 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, 28280 + ... + 28649.

It is an arithmetic number, because the mean of its divisors is an integer number (1622505).

Almost surely, 2^10531865 is an apocalyptic number.

It is an amenable number.

10531865 is a deficient number, since it is larger than the sum of its proper divisors (2448175).

10531865 is an equidigital number, since it uses as much as digits as its factorization.

10531865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56971.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 10531865 is about 3245.2835007130. The cubic root of 10531865 is about 219.1972465888.

The spelling of 10531865 in words is "ten million, five hundred thirty-one thousand, eight hundred sixty-five".