10521075 has 12 divisors (see below), whose sum is σ = 17394968. Its totient is φ = 5611200.

The previous prime is 10521053. The next prime is 10521089. The reversal of 10521075 is 57012501.

It is not a de Polignac number, because 10521075 - 2¹⁰ = 10520051 is a prime.

It is a super-2 number, since 2×10521075² = 221386038311250, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 70066 + ... + 70215.

Almost surely, 2^10521075 is an apocalyptic number.

10521075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10521075 is a deficient number, since it is larger than the sum of its proper divisors (6873893).

10521075 is a wasteful number, since it uses less digits than its factorization.

10521075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140294 (or 140289 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 10521075 is about 3243.6206621613. The cubic root of 10521075 is about 219.1223644272.

Adding to 10521075 its reverse (57012501), we get a palindrome (67533576).

The spelling of 10521075 in words is "ten million, five hundred twenty-one thousand, seventy-five".