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1116281 is a prime number
BaseRepresentation
bin100010000100001111001
32002201020202
410100201321
5241210111
635531545
712326315
oct4204171
92081222
101116281
116a2751
12459bb5
1330112a
14210b45
15170b3b
hex110879

1116281 has 2 divisors, whose sum is σ = 1116282. Its totient is φ = 1116280.

The previous prime is 1116277. The next prime is 1116289. The reversal of 1116281 is 1826111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1000000 + 116281 = 1000^2 + 341^2 .

It is a cyclic number.

It is not a de Polignac number, because 1116281 - 22 = 1116277 is a prime.

It is a super-2 number, since 2×11162812 = 2492166541922, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1116289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558140 + 558141.

It is an arithmetic number, because the mean of its divisors is an integer number (558141).

21116281 is an apocalyptic number.

1116281 is the 473-rd centered decagonal number.

It is an amenable number.

1116281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1116281 is an equidigital number, since it uses as much as digits as its factorization.

1116281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 20.

The square root of 1116281 is about 1056.5420010582. The cubic root of 1116281 is about 103.7348088272.

The spelling of 1116281 in words is "one million, one hundred sixteen thousand, two hundred eighty-one".