89565523 has 2 divisors, whose sum is σ = 89565524. Its totient is φ = 89565522.

The previous prime is 89565467. The next prime is 89565529. The reversal of 89565523 is 32556598.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89565523 - 2¹⁷ = 89434451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89565523.

It is not a weakly prime, because it can be changed into another prime (89565529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44782761 + 44782762.

It is an arithmetic number, because the mean of its divisors is an integer number (44782762).

Almost surely, 2^89565523 is an apocalyptic number.

89565523 is a deficient number, since it is larger than the sum of its proper divisors (1).

89565523 is an equidigital number, since it uses as much as digits as its factorization.

89565523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324000, while the sum is 43.

The square root of 89565523 is about 9463.9063287841. The cubic root of 89565523 is about 447.4181750667.

The spelling of 89565523 in words is "eighty-nine million, five hundred sixty-five thousand, five hundred twenty-three".