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90289271 is a prime number
BaseRepresentation
bin1010110000110…
…11010001110111
320021220011121002
411120123101313
5141103224041
612543113515
72144306012
oct530332167
9207804532
1090289271
1146a69736
12262a289b
1315923807
14bdc4379
157dd759b
hex561b477

90289271 has 2 divisors, whose sum is σ = 90289272. Its totient is φ = 90289270.

The previous prime is 90289229. The next prime is 90289279. The reversal of 90289271 is 17298209.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90289271 - 218 = 90027127 is a prime.

It is a super-2 number, since 2×902892712 = 16304304915422882, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90289279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45144635 + 45144636.

It is an arithmetic number, because the mean of its divisors is an integer number (45144636).

Almost surely, 290289271 is an apocalyptic number.

90289271 is a deficient number, since it is larger than the sum of its proper divisors (1).

90289271 is an equidigital number, since it uses as much as digits as its factorization.

90289271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 90289271 is about 9502.0666699408. The cubic root of 90289271 is about 448.6200872637.

The spelling of 90289271 in words is "ninety million, two hundred eighty-nine thousand, two hundred seventy-one".