11987522 has 4 divisors (see below), whose sum is σ = 17981286. Its totient is φ = 5993760.

The previous prime is 11987501. The next prime is 11987579. The reversal of 11987522 is 22578911.

11987522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11826721 + 160801 = 3439^2 + 401^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2996879 + ... + 2996882.

Almost surely, 2^11987522 is an apocalyptic number.

11987522 is a deficient number, since it is larger than the sum of its proper divisors (5993764).

11987522 is an equidigital number, since it uses as much as digits as its factorization.

11987522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5993763.

The product of its digits is 10080, while the sum is 35.

The square root of 11987522 is about 3462.3001025330. The cubic root of 11987522 is about 228.8634668546.

The spelling of 11987522 in words is "eleven million, nine hundred eighty-seven thousand, five hundred twenty-two".