11111552 has 32 divisors (see below), whose sum is σ = 22619520. Its totient is φ = 5434624.

The previous prime is 11111531. The next prime is 11111579. The reversal of 11111552 is 25511111.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 11111552.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5093 + ... + 6939.

It is an arithmetic number, because the mean of its divisors is an integer number (706860).

Almost surely, 2^11111552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11111552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11309760).

11111552 is an abundant number, since it is smaller than the sum of its proper divisors (11507968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11111552 is an equidigital number, since it uses as much as digits as its factorization.

11111552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908 (or 1896 counting only the distinct ones).

The product of its digits is 50, while the sum is 17.

The square root of 11111552 is about 3333.3994660106. The cubic root of 11111552 is about 223.1472681105.

Adding to 11111552 its reverse (25511111), we get a palindrome (36622663).

The spelling of 11111552 in words is "eleven million, one hundred eleven thousand, five hundred fifty-two".