11371621 has 2 divisors, whose sum is σ = 11371622. Its totient is φ = 11371620.

The previous prime is 11371609. The next prime is 11371663. The reversal of 11371621 is 12617311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10150596 + 1221025 = 3186^2 + 1105^2 .

It is a cyclic number.

It is not a de Polignac number, because 11371621 - 2⁹ = 11371109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11371592 and 11371601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11371121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5685810 + 5685811.

It is an arithmetic number, because the mean of its divisors is an integer number (5685811).

Almost surely, 2^11371621 is an apocalyptic number.

It is an amenable number.

11371621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11371621 is an equidigital number, since it uses as much as digits as its factorization.

11371621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252, while the sum is 22.

The square root of 11371621 is about 3372.1834173129. The cubic root of 11371621 is about 224.8748011292.

Adding to 11371621 its reverse (12617311), we get a palindrome (23988932).

The spelling of 11371621 in words is "eleven million, three hundred seventy-one thousand, six hundred twenty-one".