11522250 has 80 divisors (see below), whose sum is σ = 32277960. Its totient is φ = 3067200.

The previous prime is 11522249. The next prime is 11522257. The reversal of 11522250 is 5222511.

It can be written as a sum of positive squares in 4 ways, for example, as 1656369 + 9865881 = 1287^2 + 3141^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (11522257) 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 39 ways as a sum of consecutive naturals, for example, 19966 + ... + 20534.

It is a vampire number, since it can be written as 2250 ⋅ 5121 (with its own digits).

Almost surely, 2^11522250 is an apocalyptic number.

11522250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11522250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16138980).

11522250 is an abundant number, since it is smaller than the sum of its proper divisors (20755710).

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

11522250 is an equidigital number, since it uses as much as digits as its factorization.

11522250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598 (or 579 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 11522250 is about 3394.4439898163. The cubic root of 11522250 is about 225.8633496622.

Adding to 11522250 its reverse (5222511), we get a palindrome (16744761).

It can be divided in two parts, 1 and 1522250, that added together give a palindrome (1522251).

The spelling of 11522250 in words is "eleven million, five hundred twenty-two thousand, two hundred fifty".