90552589 has 2 divisors, whose sum is σ = 90552590. Its totient is φ = 90552588.

The previous prime is 90552563. The next prime is 90552593. The reversal of 90552589 is 98525509.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62015625 + 28536964 = 7875^2 + 5342^2 .

It is an emirp because it is prime and its reverse (98525509) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90552589 - 2¹¹ = 90550541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90552509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45276294 + 45276295.

It is an arithmetic number, because the mean of its divisors is an integer number (45276295).

Almost surely, 2^90552589 is an apocalyptic number.

It is an amenable number.

90552589 is a deficient number, since it is larger than the sum of its proper divisors (1).

90552589 is an equidigital number, since it uses as much as digits as its factorization.

90552589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 43.

The square root of 90552589 is about 9515.9124102736. The cubic root of 90552589 is about 449.0557798304.

The spelling of 90552589 in words is "ninety million, five hundred fifty-two thousand, five hundred eighty-nine".