11533081 has 6 divisors (see below), whose sum is σ = 13416090. Its totient is φ = 9885456.

The previous prime is 11533079. The next prime is 11533091. The reversal of 11533081 is 18033511.

11533081 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11526025 + 7056 = 3395^2 + 84^2 .

It is not a de Polignac number, because 11533081 - 2¹ = 11533079 is a prime.

It is a super-2 number, since 2×11533081² = 266023914705122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11533031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117636 + ... + 117733.

It is an arithmetic number, because the mean of its divisors is an integer number (2236015).

Almost surely, 2^11533081 is an apocalyptic number.

It is an amenable number.

11533081 is a deficient number, since it is larger than the sum of its proper divisors (1883009).

11533081 is an equidigital number, since it uses as much as digits as its factorization.

11533081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235383 (or 235376 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 11533081 is about 3396.0390162659. The cubic root of 11533081 is about 225.9340985703.

Adding to 11533081 its reverse (18033511), we get a palindrome (29566592).

The spelling of 11533081 in words is "eleven million, five hundred thirty-three thousand, eighty-one".