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2291189 is a prime number
BaseRepresentation
bin1000101111010111110101
311022101220212
420233113311
51041304224
6121035205
725321565
oct10572765
94271825
102291189
11132544a
12925b05
13622b44
14438da5
15303d0e
hex22f5f5

2291189 has 2 divisors, whose sum is σ = 2291190. Its totient is φ = 2291188.

The previous prime is 2291183. The next prime is 2291197. The reversal of 2291189 is 9811922.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1868689 + 422500 = 1367^2 + 650^2 .

It is a cyclic number.

It is not a de Polignac number, because 2291189 - 28 = 2290933 is a prime.

It is equal to p168908 and since 2291189 and 168908 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2291183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145594 + 1145595.

It is an arithmetic number, because the mean of its divisors is an integer number (1145595).

22291189 is an apocalyptic number.

It is an amenable number.

2291189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291189 is an equidigital number, since it uses as much as digits as its factorization.

2291189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 32.

The square root of 2291189 is about 1513.6674007192. The cubic root of 2291189 is about 131.8318374352.

The spelling of 2291189 in words is "two million, two hundred ninety-one thousand, one hundred eighty-nine".