11411521 has 4 divisors (see below), whose sum is σ = 12448944. Its totient is φ = 10374100.

The previous prime is 11411501. The next prime is 11411563. The reversal of 11411521 is 12511411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11411521 - 2¹¹ = 11409473 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11411495 and 11411504.

It is not an unprimeable number, because it can be changed into a prime (11411501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 518695 + ... + 518716.

It is an arithmetic number, because the mean of its divisors is an integer number (3112236).

Almost surely, 2^11411521 is an apocalyptic number.

11411521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11411521 is a deficient number, since it is larger than the sum of its proper divisors (1037423).

11411521 is a wasteful number, since it uses less digits than its factorization.

11411521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037422.

The product of its digits is 40, while the sum is 16.

The square root of 11411521 is about 3378.0942852443. The cubic root of 11411521 is about 225.1375027830.

Adding to 11411521 its reverse (12511411), we get a palindrome (23922932).

It can be divided in two parts, 1141 and 1521, that added together give a palindrome (2662).

The spelling of 11411521 in words is "eleven million, four hundred eleven thousand, five hundred twenty-one".