11621033 has 4 divisors (see below), whose sum is σ = 11723988. Its totient is φ = 11518080.

The previous prime is 11621023. The next prime is 11621039. The reversal of 11621033 is 33012611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33012611 = 113 ⋅292147.

It can be written as a sum of positive squares in 2 ways, for example, as 5822569 + 5798464 = 2413^2 + 2408^2 .

It is a cyclic number.

It is not a de Polignac number, because 11621033 - 2⁴ = 11621017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11621039) 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 in 3 ways as a sum of consecutive naturals, for example, 51308 + ... + 51533.

It is an arithmetic number, because the mean of its divisors is an integer number (2930997).

Almost surely, 2^11621033 is an apocalyptic number.

It is an amenable number.

11621033 is a deficient number, since it is larger than the sum of its proper divisors (102955).

11621033 is a wasteful number, since it uses less digits than its factorization.

11621033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102954.

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

The square root of 11621033 is about 3408.9636255026. The cubic root of 11621033 is about 226.5069739758.

Adding to 11621033 its reverse (33012611), we get a palindrome (44633644).

The spelling of 11621033 in words is "eleven million, six hundred twenty-one thousand, thirty-three".