11428559 has 2 divisors, whose sum is σ = 11428560. Its totient is φ = 11428558.

The previous prime is 11428531. The next prime is 11428591. The reversal of 11428559 is 95582411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11428559 - 2²⁰ = 10379983 is a prime.

It is a super-2 number, since 2×11428559² = 261223921632962, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11428259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5714279 + 5714280.

It is an arithmetic number, because the mean of its divisors is an integer number (5714280).

Almost surely, 2^11428559 is an apocalyptic number.

11428559 is a deficient number, since it is larger than the sum of its proper divisors (1).

11428559 is an equidigital number, since it uses as much as digits as its factorization.

11428559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 35.

The square root of 11428559 is about 3380.6151807031. The cubic root of 11428559 is about 225.2494944357.

The spelling of 11428559 in words is "eleven million, four hundred twenty-eight thousand, five hundred fifty-nine".