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249211 is a prime number
BaseRepresentation
bin111100110101111011
3110122212001
4330311323
530433321
65201431
72055364
oct746573
9418761
10249211
11160266
12100277
1389581
1466b6b
154dc91
hex3cd7b

249211 has 2 divisors, whose sum is σ = 249212. Its totient is φ = 249210.

The previous prime is 249199. The next prime is 249217. The reversal of 249211 is 112942.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-249211 is a prime.

It is a super-2 number, since 2×2492112 = 124212245042, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (249217) 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, 124605 + 124606.

It is an arithmetic number, because the mean of its divisors is an integer number (124606).

2249211 is an apocalyptic number.

249211 is a deficient number, since it is larger than the sum of its proper divisors (1).

249211 is an equidigital number, since it uses as much as digits as its factorization.

249211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 19.

The square root of 249211 is about 499.2103764947. The cubic root of 249211 is about 62.9297108070.

The spelling of 249211 in words is "two hundred forty-nine thousand, two hundred eleven".