90540211 has 2 divisors, whose sum is σ = 90540212. Its totient is φ = 90540210.

The previous prime is 90540209. The next prime is 90540227. The reversal of 90540211 is 11204509.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90540211 - 2¹ = 90540209 is a prime.

Together with 90540209, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (90547211) 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, 45270105 + 45270106.

It is an arithmetic number, because the mean of its divisors is an integer number (45270106).

Almost surely, 2^90540211 is an apocalyptic number.

90540211 is a deficient number, since it is larger than the sum of its proper divisors (1).

90540211 is an equidigital number, since it uses as much as digits as its factorization.

90540211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 90540211 is about 9515.2620037496. The cubic root of 90540211 is about 449.0353178139.

The spelling of 90540211 in words is "ninety million, five hundred forty thousand, two hundred eleven".