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115111201 = 229502669
BaseRepresentation
bin1101101110001…
…11010100100001
322000121020212211
412313013110201
5213432024301
615231122121
72565300112
oct667072441
9260536784
10115111201
1159a82827
1232673341
131ab0494a
1411406209
15a18c051
hex6dc7521

115111201 has 4 divisors (see below), whose sum is σ = 115614100. Its totient is φ = 114608304.

The previous prime is 115111193. The next prime is 115111219. The reversal of 115111201 is 102111511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102111511 = 367278233.

It can be written as a sum of positive squares in 2 ways, for example, as 100480576 + 14630625 = 10024^2 + 3825^2 .

It is a cyclic number.

It is not a de Polignac number, because 115111201 - 23 = 115111193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (110111201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251106 + ... + 251563.

It is an arithmetic number, because the mean of its divisors is an integer number (28903525).

Almost surely, 2115111201 is an apocalyptic number.

It is an amenable number.

115111201 is a deficient number, since it is larger than the sum of its proper divisors (502899).

115111201 is an equidigital number, since it uses as much as digits as its factorization.

115111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502898.

The product of its (nonzero) digits is 10, while the sum is 13.

The square root of 115111201 is about 10728.9888153544. The cubic root of 115111201 is about 486.4511058758.

Adding to 115111201 its reverse (102111511), we get a palindrome (217222712).

The spelling of 115111201 in words is "one hundred fifteen million, one hundred eleven thousand, two hundred one".

Divisors: 1 229 502669 115111201