11528281 has 2 divisors, whose sum is σ = 11528282. Its totient is φ = 11528280.

The previous prime is 11528273. The next prime is 11528317. The reversal of 11528281 is 18282511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7952400 + 3575881 = 2820^2 + 1891^2 .

It is a cyclic number.

It is not a de Polignac number, because 11528281 - 2³ = 11528273 is a prime.

It is a super-2 number, since 2×11528281² = 265802525629922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11528581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5764140 + 5764141.

It is an arithmetic number, because the mean of its divisors is an integer number (5764141).

Almost surely, 2^11528281 is an apocalyptic number.

It is an amenable number.

11528281 is a deficient number, since it is larger than the sum of its proper divisors (1).

11528281 is an equidigital number, since it uses as much as digits as its factorization.

11528281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1280, while the sum is 28.

The square root of 11528281 is about 3395.3322370572. The cubic root of 11528281 is about 225.9027500764.

The spelling of 11528281 in words is "eleven million, five hundred twenty-eight thousand, two hundred eighty-one".