89566121 has 2 divisors, whose sum is σ = 89566122. Its totient is φ = 89566120.

The previous prime is 89566073. The next prime is 89566153. The reversal of 89566121 is 12166598.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71588521 + 17977600 = 8461^2 + 4240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89566121 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (89566021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44783060 + 44783061.

It is an arithmetic number, because the mean of its divisors is an integer number (44783061).

Almost surely, 2^89566121 is an apocalyptic number.

It is an amenable number.

89566121 is a deficient number, since it is larger than the sum of its proper divisors (1).

89566121 is an equidigital number, since it uses as much as digits as its factorization.

89566121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 38.

The square root of 89566121 is about 9463.9379224507. The cubic root of 89566121 is about 447.4191708199.

The spelling of 89566121 in words is "eighty-nine million, five hundred sixty-six thousand, one hundred twenty-one".