11453121 has 12 divisors (see below), whose sum is σ = 17516772. Its totient is φ = 7186176.

The previous prime is 11453111. The next prime is 11453129. The reversal of 11453121 is 12135411.

11453121 is a `hidden beast` number, since 114 + 531 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4562496 + 6890625 = 2136^2 + 2625^2 .

It is not a de Polignac number, because 11453121 - 2¹⁰ = 11452097 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11453094 and 11453103.

It is not an unprimeable number, because it can be changed into a prime (11453129) 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 11 ways as a sum of consecutive naturals, for example, 37276 + ... + 37581.

It is an arithmetic number, because the mean of its divisors is an integer number (1459731).

Almost surely, 2^11453121 is an apocalyptic number.

It is an amenable number.

11453121 is a deficient number, since it is larger than the sum of its proper divisors (6063651).

11453121 is a wasteful number, since it uses less digits than its factorization.

11453121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74880 (or 74877 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 11453121 is about 3384.2460016967. The cubic root of 11453121 is about 225.4107460076.

Adding to 11453121 its reverse (12135411), we get a palindrome (23588532).

It can be divided in two parts, 114 and 53121, that added together give a palindrome (53235).

The spelling of 11453121 in words is "eleven million, four hundred fifty-three thousand, one hundred twenty-one".