11533945 has 8 divisors (see below), whose sum is σ = 13889736. Its totient is φ = 9194496.

The previous prime is 11533943. The next prime is 11533957. The reversal of 11533945 is 54933511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 958441 + 10575504 = 979^2 + 3252^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11533945 - 2¹ = 11533943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11533943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2472 + ... + 5401.

It is an arithmetic number, because the mean of its divisors is an integer number (1736217).

Almost surely, 2^11533945 is an apocalyptic number.

It is an amenable number.

11533945 is a deficient number, since it is larger than the sum of its proper divisors (2355791).

11533945 is an equidigital number, since it uses as much as digits as its factorization.

11533945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8171.

The product of its digits is 8100, while the sum is 31.

The square root of 11533945 is about 3396.1662209026. The cubic root of 11533945 is about 225.9397403755.

The spelling of 11533945 in words is "eleven million, five hundred thirty-three thousand, nine hundred forty-five".