121528859 has 2 divisors, whose sum is σ = 121528860. Its totient is φ = 121528858.

The previous prime is 121528853. The next prime is 121528873. The reversal of 121528859 is 958825121.

It is a weak prime.

It is an emirp because it is prime and its reverse (958825121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121528859 - 2⁴ = 121528843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121528853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60764429 + 60764430.

It is an arithmetic number, because the mean of its divisors is an integer number (60764430).

Almost surely, 2^121528859 is an apocalyptic number.

121528859 is a deficient number, since it is larger than the sum of its proper divisors (1).

121528859 is an equidigital number, since it uses as much as digits as its factorization.

121528859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 41.

The square root of 121528859 is about 11024.0128356239. The cubic root of 121528859 is about 495.3282983527.

The spelling of 121528859 in words is "one hundred twenty-one million, five hundred twenty-eight thousand, eight hundred fifty-nine".