11431552 has 64 divisors (see below), whose sum is σ = 25997760. Its totient is φ = 4956160.

The previous prime is 11431549. The next prime is 11431561. The reversal of 11431552 is 25513411.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×11431552² = 261360762257408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32208 + ... + 32560.

It is an arithmetic number, because the mean of its divisors is an integer number (406215).

Almost surely, 2^11431552 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 11431552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12998880).

11431552 is an abundant number, since it is smaller than the sum of its proper divisors (14566208).

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

11431552 is a wasteful number, since it uses less digits than its factorization.

11431552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 389 counting only the distinct ones).

The product of its digits is 600, while the sum is 22.

The square root of 11431552 is about 3381.0578226348. The cubic root of 11431552 is about 225.2691560831.

Adding to 11431552 its reverse (25513411), we get a palindrome (36944963).

The spelling of 11431552 in words is "eleven million, four hundred thirty-one thousand, five hundred fifty-two".