11528251 has 4 divisors (see below), whose sum is σ = 13175152. Its totient is φ = 9881352.

The previous prime is 11528213. The next prime is 11528263. The reversal of 11528251 is 15282511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11528251 - 2⁷ = 11528123 is a prime.

It is a super-3 number, since 3×11528251³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11528281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 823440 + ... + 823453.

It is an arithmetic number, because the mean of its divisors is an integer number (3293788).

Almost surely, 2^11528251 is an apocalyptic number.

11528251 is a deficient number, since it is larger than the sum of its proper divisors (1646901).

11528251 is an equidigital number, since it uses as much as digits as its factorization.

11528251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646900.

The product of its digits is 800, while the sum is 25.

The square root of 11528251 is about 3395.3278192245. The cubic root of 11528251 is about 225.9025541209.

The spelling of 11528251 in words is "eleven million, five hundred twenty-eight thousand, two hundred fifty-one".