10521065 has 4 divisors (see below), whose sum is σ = 12625284. Its totient is φ = 8416848.

The previous prime is 10521053. The next prime is 10521089. The reversal of 10521065 is 56012501.

10521065 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.

It can be written as a sum of positive squares in 2 ways, for example, as 7795264 + 2725801 = 2792^2 + 1651^2 .

It is a cyclic number.

It is not a de Polignac number, because 10521065 - 2⁶ = 10521001 is a prime.

It is a super-2 number, since 2×10521065² = 221385617468450, which contains 22 as substring.

It is a Duffinian 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, 1052102 + ... + 1052111.

It is an arithmetic number, because the mean of its divisors is an integer number (3156321).

Almost surely, 2^10521065 is an apocalyptic number.

It is an amenable number.

10521065 is a deficient number, since it is larger than the sum of its proper divisors (2104219).

10521065 is an equidigital number, since it uses as much as digits as its factorization.

10521065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104218.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 10521065 is about 3243.6191206737. The cubic root of 10521065 is about 219.1222950038.

Adding to 10521065 its reverse (56012501), we get a palindrome (66533566).

The spelling of 10521065 in words is "ten million, five hundred twenty-one thousand, sixty-five".