10521385 has 16 divisors (see below), whose sum is σ = 15278976. Its totient is φ = 6789888.

The previous prime is 10521377. The next prime is 10521437. The reversal of 10521385 is 58312501.

It is a happy number.

It is not a de Polignac number, because 10521385 - 2³ = 10521377 is a prime.

It is a super-2 number, since 2×10521385² = 221399084636450, 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 15 ways as a sum of consecutive naturals, for example, 8247 + ... + 9436.

It is an arithmetic number, because the mean of its divisors is an integer number (954936).

Almost surely, 2^10521385 is an apocalyptic number.

It is an amenable number.

10521385 is a deficient number, since it is larger than the sum of its proper divisors (4757591).

10521385 is a wasteful number, since it uses less digits than its factorization.

10521385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17712.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 10521385 is about 3243.6684479151. The cubic root of 10521385 is about 219.1245165287.

Adding to 10521385 its reverse (58312501), we get a palindrome (68833886).

The spelling of 10521385 in words is "ten million, five hundred twenty-one thousand, three hundred eighty-five".