11453021 has 4 divisors (see below), whose sum is σ = 11647200. Its totient is φ = 11258844.

The previous prime is 11453003. The next prime is 11453023. The reversal of 11453021 is 12035411.

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: 12035411 = 67 ⋅179633.

It is a cyclic number.

It is not a de Polignac number, because 11453021 - 2¹⁴ = 11436637 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 (11453023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97001 + ... + 97118.

It is an arithmetic number, because the mean of its divisors is an integer number (2911800).

Almost surely, 2^11453021 is an apocalyptic number.

It is an amenable number.

11453021 is a deficient number, since it is larger than the sum of its proper divisors (194179).

11453021 is an equidigital number, since it uses as much as digits as its factorization.

11453021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194178.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 11453021 is about 3384.2312273248. The cubic root of 11453021 is about 225.4100899670.

Adding to 11453021 its reverse (12035411), we get a palindrome (23488432).

It can be divided in two parts, 114 and 53021, that added together give a palindrome (53135).

The spelling of 11453021 in words is "eleven million, four hundred fifty-three thousand, twenty-one".