1133621 has 2 divisors, whose sum is σ = 1133622. Its totient is φ = 1133620.

The previous prime is 1133591. The next prime is 1133623. The reversal of 1133621 is 1263311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 940900 + 192721 = 970^2 + 439^2 .

It is a cyclic number.

It is not a de Polignac number, because 1133621 - 2¹⁰ = 1132597 is a prime.

Together with 1133623, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1133621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1133623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 566810 + 566811.

It is an arithmetic number, because the mean of its divisors is an integer number (566811).

2^1133621 is an apocalyptic number.

It is an amenable number.

1133621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1133621 is an equidigital number, since it uses as much as digits as its factorization.

1133621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 17.

The square root of 1133621 is about 1064.7163941633. The cubic root of 1133621 is about 104.2691806438.

Adding to 1133621 its reverse (1263311), we get a palindrome (2396932).

The spelling of 1133621 in words is "one million, one hundred thirty-three thousand, six hundred twenty-one".