11531522 has 8 divisors (see below), whose sum is σ = 17505936. Its totient is φ = 5696212.

The previous prime is 11531521. The next prime is 11531539. The reversal of 11531522 is 22513511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 11531494 and 11531503.

It is not an unprimeable number, because it can be changed into a prime (11531521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34568 + ... + 34899.

It is an arithmetic number, because the mean of its divisors is an integer number (2188242).

Almost surely, 2^11531522 is an apocalyptic number.

11531522 is a deficient number, since it is larger than the sum of its proper divisors (5974414).

11531522 is an equidigital number, since it uses as much as digits as its factorization.

11531522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69552.

The product of its digits is 300, while the sum is 20.

The square root of 11531522 is about 3395.8094763988. The cubic root of 11531522 is about 225.9239177946.

The spelling of 11531522 in words is "eleven million, five hundred thirty-one thousand, five hundred twenty-two".