87045589 has 2 divisors, whose sum is σ = 87045590. Its totient is φ = 87045588.

The previous prime is 87045527. The next prime is 87045641. The reversal of 87045589 is 98554078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63600625 + 23444964 = 7975^2 + 4842^2 .

It is a cyclic number.

It is not a de Polignac number, because 87045589 - 2¹³ = 87037397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87045689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43522794 + 43522795.

It is an arithmetic number, because the mean of its divisors is an integer number (43522795).

Almost surely, 2^87045589 is an apocalyptic number.

It is an amenable number.

87045589 is a deficient number, since it is larger than the sum of its proper divisors (1).

87045589 is an equidigital number, since it uses as much as digits as its factorization.

87045589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 46.

The square root of 87045589 is about 9329.8225599419. The cubic root of 87045589 is about 443.1821459838.

The spelling of 87045589 in words is "eighty-seven million, forty-five thousand, five hundred eighty-nine".