90013571 has 2 divisors, whose sum is σ = 90013572. Its totient is φ = 90013570.

The previous prime is 90013549. The next prime is 90013579. The reversal of 90013571 is 17531009.

It is a strong prime.

It is an emirp because it is prime and its reverse (17531009) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90013571 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90013571.

It is not a weakly prime, because it can be changed into another prime (90013579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45006785 + 45006786.

It is an arithmetic number, because the mean of its divisors is an integer number (45006786).

Almost surely, 2^90013571 is an apocalyptic number.

90013571 is a deficient number, since it is larger than the sum of its proper divisors (1).

90013571 is an equidigital number, since it uses as much as digits as its factorization.

90013571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 945, while the sum is 26.

The square root of 90013571 is about 9487.5482080462. The cubic root of 90013571 is about 448.1629983917.

The spelling of 90013571 in words is "ninety million, thirteen thousand, five hundred seventy-one".