11530421 has 8 divisors (see below), whose sum is σ = 13534080. Its totient is φ = 9615888.

The previous prime is 11530417. The next prime is 11530433. The reversal of 11530421 is 12403511.

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

It is a cyclic number.

It is not a de Polignac number, because 11530421 - 2² = 11530417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11530421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11530121) 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, 22001 + ... + 22518.

It is an arithmetic number, because the mean of its divisors is an integer number (1691760).

Almost surely, 2^11530421 is an apocalyptic number.

It is an amenable number.

11530421 is a deficient number, since it is larger than the sum of its proper divisors (2003659).

11530421 is an equidigital number, since it uses as much as digits as its factorization.

11530421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44563.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 11530421 is about 3395.6473609608. The cubic root of 11530421 is about 225.9167273547.

Adding to 11530421 its reverse (12403511), we get a palindrome (23933932).

The spelling of 11530421 in words is "eleven million, five hundred thirty thousand, four hundred twenty-one".