11521475 has 12 divisors (see below), whose sum is σ = 16327824. Its totient is φ = 7900320.

The previous prime is 11521457. The next prime is 11521483. The reversal of 11521475 is 57412511.

It is not a de Polignac number, because 11521475 - 2²⁰ = 10472899 is a prime.

It is a super-3 number, since 3×11521475³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32744 + ... + 33093.

It is an arithmetic number, because the mean of its divisors is an integer number (1360652).

Almost surely, 2^11521475 is an apocalyptic number.

11521475 is a deficient number, since it is larger than the sum of its proper divisors (4806349).

11521475 is an equidigital number, since it uses as much as digits as its factorization.

11521475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65854 (or 65849 counting only the distinct ones).

The product of its digits is 1400, while the sum is 26.

The square root of 11521475 is about 3394.3298307619. The cubic root of 11521475 is about 225.8582856044.

Adding to 11521475 its reverse (57412511), we get a palindrome (68933986).

The spelling of 11521475 in words is "eleven million, five hundred twenty-one thousand, four hundred seventy-five".