11272521 has 8 divisors (see below), whose sum is σ = 16186240. Its totient is φ = 6936912.

The previous prime is 11272519. The next prime is 11272523. The reversal of 11272521 is 12527211.

It is an interprime number because it is at equal distance from previous prime (11272519) and next prime (11272523).

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

It is not a de Polignac number, because 11272521 - 2¹ = 11272519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11272523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144481 + ... + 144558.

It is an arithmetic number, because the mean of its divisors is an integer number (2023280).

Almost surely, 2^11272521 is an apocalyptic number.

It is an amenable number.

11272521 is a deficient number, since it is larger than the sum of its proper divisors (4913719).

11272521 is a wasteful number, since it uses less digits than its factorization.

11272521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289055.

The product of its digits is 280, while the sum is 21.

The square root of 11272521 is about 3357.4575202078. The cubic root of 11272521 is about 224.2196572456.

Adding to 11272521 its reverse (12527211), we get a palindrome (23799732).

The spelling of 11272521 in words is "eleven million, two hundred seventy-two thousand, five hundred twenty-one".