11535421 has 2 divisors, whose sum is σ = 11535422. Its totient is φ = 11535420.

The previous prime is 11535409. The next prime is 11535427. The reversal of 11535421 is 12453511.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8940100 + 2595321 = 2990^2 + 1611^2 .

It is a cyclic number.

It is not a de Polignac number, because 11535421 - 2⁹ = 11534909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11535392 and 11535401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11535427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5767710 + 5767711.

It is an arithmetic number, because the mean of its divisors is an integer number (5767711).

Almost surely, 2^11535421 is an apocalyptic number.

It is an amenable number.

11535421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11535421 is an equidigital number, since it uses as much as digits as its factorization.

11535421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 22.

The square root of 11535421 is about 3396.3835178024. The cubic root of 11535421 is about 225.9493778075.

Adding to 11535421 its reverse (12453511), we get a palindrome (23988932).

The spelling of 11535421 in words is "eleven million, five hundred thirty-five thousand, four hundred twenty-one".