11215572 has 24 divisors (see below), whose sum is σ = 26241600. Its totient is φ = 3728256.

The previous prime is 11215549. The next prime is 11215579. The reversal of 11215572 is 27551211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11215579) by changing a digit.

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, 4204 + ... + 6332.

It is an arithmetic number, because the mean of its divisors is an integer number (1093400).

Almost surely, 2^11215572 is an apocalyptic number.

11215572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11215572 is an abundant number, since it is smaller than the sum of its proper divisors (15026028).

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

11215572 is a wasteful number, since it uses less digits than its factorization.

11215572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575 (or 2573 counting only the distinct ones).

The product of its digits is 700, while the sum is 24.

The square root of 11215572 is about 3348.9658105152. The cubic root of 11215572 is about 223.8414322079.

Adding to 11215572 its reverse (27551211), we get a palindrome (38766783).

The spelling of 11215572 in words is "eleven million, two hundred fifteen thousand, five hundred seventy-two".