11533257 has 12 divisors (see below), whose sum is σ = 16694964. Its totient is φ = 7672320.

The previous prime is 11533253. The next prime is 11533273. The reversal of 11533257 is 75233511.

It can be written as a sum of positive squares in 2 ways, for example, as 7160976 + 4372281 = 2676^2 + 2091^2 .

It is not a de Polignac number, because 11533257 - 2² = 11533253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11533257.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11533253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4257 + ... + 6417.

It is an arithmetic number, because the mean of its divisors is an integer number (1391247).

Almost surely, 2^11533257 is an apocalyptic number.

It is an amenable number.

11533257 is a deficient number, since it is larger than the sum of its proper divisors (5161707).

11533257 is a wasteful number, since it uses less digits than its factorization.

11533257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760 (or 2757 counting only the distinct ones).

The product of its digits is 3150, while the sum is 27.

The square root of 11533257 is about 3396.0649287079. The cubic root of 11533257 is about 225.9352478498.

Adding to 11533257 its reverse (75233511), we get a palindrome (86766768).

The spelling of 11533257 in words is "eleven million, five hundred thirty-three thousand, two hundred fifty-seven".