90818271 has 12 divisors (see below), whose sum is σ = 138086520. Its totient is φ = 57358800.

The previous prime is 90818249. The next prime is 90818297. The reversal of 90818271 is 17281809.

It is not a de Polignac number, because 90818271 - 2⁹ = 90817759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90818201) 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 in 11 ways as a sum of consecutive naturals, for example, 265380 + ... + 265721.

It is an arithmetic number, because the mean of its divisors is an integer number (11507210).

Almost surely, 2^90818271 is an apocalyptic number.

90818271 is a deficient number, since it is larger than the sum of its proper divisors (47268249).

90818271 is a wasteful number, since it uses less digits than its factorization.

90818271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531126 (or 531123 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 90818271 is about 9529.8620661581. The cubic root of 90818271 is about 449.4945287284.

The spelling of 90818271 in words is "ninety million, eight hundred eighteen thousand, two hundred seventy-one".