11321541 has 72 divisors (see below), whose sum is σ = 22306752. Its totient is φ = 5356800.

The previous prime is 11321537. The next prime is 11321551. The reversal of 11321541 is 14512311.

It is not a de Polignac number, because 11321541 - 2² = 11321537 is a prime.

It is a super-2 number, since 2×11321541² = 256354581229362, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321521) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 365196 + ... + 365226.

It is an arithmetic number, because the mean of its divisors is an integer number (309816).

Almost surely, 2^11321541 is an apocalyptic number.

11321541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11321541 is a deficient number, since it is larger than the sum of its proper divisors (10985211).

11321541 is a wasteful number, since it uses less digits than its factorization.

11321541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 69 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 11321541 is about 3364.7497678134. The cubic root of 11321541 is about 224.5442032129.

Adding to 11321541 its product of digits (120), we get a triangular number (11321661 = T₄₇₅₈).

Adding to 11321541 its reverse (14512311), we get a palindrome (25833852).

The spelling of 11321541 in words is "eleven million, three hundred twenty-one thousand, five hundred forty-one".