11987575 has 12 divisors (see below), whose sum is σ = 15647560. Its totient is φ = 9084960.

The previous prime is 11987501. The next prime is 11987579. The reversal of 11987575 is 57578911.

11987575 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 11987575 - 2²¹ = 9890423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11987579) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12144 + ... + 13093.

Almost surely, 2^11987575 is an apocalyptic number.

11987575 is a deficient number, since it is larger than the sum of its proper divisors (3659985).

11987575 is a wasteful number, since it uses less digits than its factorization.

11987575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25266 (or 25261 counting only the distinct ones).

The product of its digits is 88200, while the sum is 43.

The square root of 11987575 is about 3462.3077563960. The cubic root of 11987575 is about 228.8638041427.

The spelling of 11987575 in words is "eleven million, nine hundred eighty-seven thousand, five hundred seventy-five".