11534421 has 4 divisors (see below), whose sum is σ = 15379232. Its totient is φ = 7689612.

The previous prime is 11534399. The next prime is 11534423. The reversal of 11534421 is 12443511.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12443511 = 3 ⋅4147837.

It is not a de Polignac number, because 11534421 - 2¹⁷ = 11403349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11534423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1922401 + ... + 1922406.

It is an arithmetic number, because the mean of its divisors is an integer number (3844808).

Almost surely, 2^11534421 is an apocalyptic number.

It is an amenable number.

11534421 is a deficient number, since it is larger than the sum of its proper divisors (3844811).

11534421 is an equidigital number, since it uses as much as digits as its factorization.

11534421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3844810.

The product of its digits is 480, while the sum is 21.

The square root of 11534421 is about 3396.2362991995. The cubic root of 11534421 is about 225.9428484718.

Adding to 11534421 its reverse (12443511), we get a palindrome (23977932).

The spelling of 11534421 in words is "eleven million, five hundred thirty-four thousand, four hundred twenty-one".