11528455 has 4 divisors (see below), whose sum is σ = 13834152. Its totient is φ = 9222760.

The previous prime is 11528449. The next prime is 11528467. The reversal of 11528455 is 55482511.

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

It is not a de Polignac number, because 11528455 - 2¹⁷ = 11397383 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1152841 + ... + 1152850.

It is an arithmetic number, because the mean of its divisors is an integer number (3458538).

Almost surely, 2^11528455 is an apocalyptic number.

11528455 is a deficient number, since it is larger than the sum of its proper divisors (2305697).

11528455 is an equidigital number, since it uses as much as digits as its factorization.

11528455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2305696.

The product of its digits is 8000, while the sum is 31.

The square root of 11528455 is about 3395.3578603735. The cubic root of 11528455 is about 225.9038866113.

The spelling of 11528455 in words is "eleven million, five hundred twenty-eight thousand, four hundred fifty-five".