11521067 has 4 divisors (see below), whose sum is σ = 11541816. Its totient is φ = 11500320.

The previous prime is 11521051. The next prime is 11521187. The reversal of 11521067 is 76012511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76012511 = 3449 ⋅22039.

It is a cyclic number.

It is not a de Polignac number, because 11521067 - 2⁴ = 11521051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11521007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9518 + ... + 10659.

It is an arithmetic number, because the mean of its divisors is an integer number (2885454).

Almost surely, 2^11521067 is an apocalyptic number.

11521067 is a deficient number, since it is larger than the sum of its proper divisors (20749).

11521067 is an equidigital number, since it uses as much as digits as its factorization.

11521067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20748.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 11521067 is about 3394.2697300008. The cubic root of 11521067 is about 225.8556195318.

Adding to 11521067 its reverse (76012511), we get a palindrome (87533578).

The spelling of 11521067 in words is "eleven million, five hundred twenty-one thousand, sixty-seven".