11520775 has 24 divisors (see below), whose sum is σ = 16717184. Its totient is φ = 7711200.

The previous prime is 11520763. The next prime is 11520791. The reversal of 11520775 is 57702511.

11520775 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11520775 - 2¹⁵ = 11488007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6760 + ... + 8290.

Almost surely, 2^11520775 is an apocalyptic number.

11520775 is a deficient number, since it is larger than the sum of its proper divisors (5196409).

11520775 is a wasteful number, since it uses less digits than its factorization.

11520775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591 (or 1586 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 11520775 is about 3394.2267160577. The cubic root of 11520775 is about 225.8537114215.

The spelling of 11520775 in words is "eleven million, five hundred twenty thousand, seven hundred seventy-five".