90270071 has 2 divisors, whose sum is σ = 90270072. Its totient is φ = 90270070.

The previous prime is 90270049. The next prime is 90270073. The reversal of 90270071 is 17007209.

It is a strong prime.

It is an emirp because it is prime and its reverse (17007209) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90270071 - 2²² = 86075767 is a prime.

Together with 90270073, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90270071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90270073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45135035 + 45135036.

It is an arithmetic number, because the mean of its divisors is an integer number (45135036).

Almost surely, 2^90270071 is an apocalyptic number.

90270071 is a deficient number, since it is larger than the sum of its proper divisors (1).

90270071 is an equidigital number, since it uses as much as digits as its factorization.

90270071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882, while the sum is 26.

The square root of 90270071 is about 9501.0563096953. The cubic root of 90270071 is about 448.5882853445.

The spelling of 90270071 in words is "ninety million, two hundred seventy thousand, seventy-one".