11521107 has 24 divisors (see below), whose sum is σ = 18236400. Its totient is φ = 6965568.

The previous prime is 11521051. The next prime is 11521187. The reversal of 11521107 is 70112511.

It is a happy number.

It is not a de Polignac number, because 11521107 - 2⁷ = 11520979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11521107.

It is not an unprimeable number, because it can be changed into a prime (11521187) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6069 + ... + 7737.

It is an arithmetic number, because the mean of its divisors is an integer number (759850).

Almost surely, 2^11521107 is an apocalyptic number.

11521107 is a deficient number, since it is larger than the sum of its proper divisors (6715293).

11521107 is a wasteful number, since it uses less digits than its factorization.

11521107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747 (or 1744 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 18.

The square root of 11521107 is about 3394.2756222794. The cubic root of 11521107 is about 225.8558809142.

Adding to 11521107 its reverse (70112511), we get a palindrome (81633618).

It can be divided in two parts, 11521 and 107, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 11521107 in words is "eleven million, five hundred twenty-one thousand, one hundred seven".