Search a number
-
+
115205201 = 1123102587
BaseRepresentation
bin1101101110111…
…10010001010001
322000210000211022
412313132101101
5213443031301
615233125225
72566141136
oct667362121
9260700738
10115205201
115a037411
12326b9815
131ab38677
141142c58d
15a1a9d1b
hex6dde451

115205201 has 4 divisors (see below), whose sum is σ = 115308912. Its totient is φ = 115101492.

The previous prime is 115205179. The next prime is 115205221. The reversal of 115205201 is 102502511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 102502511 = 195394869.

It is a cyclic number.

It is not a de Polignac number, because 115205201 - 222 = 111010897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115205201.

It is not an unprimeable number, because it can be changed into a prime (115205221) 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, 50171 + ... + 52416.

It is an arithmetic number, because the mean of its divisors is an integer number (28827228).

Almost surely, 2115205201 is an apocalyptic number.

It is an amenable number.

115205201 is a deficient number, since it is larger than the sum of its proper divisors (103711).

115205201 is a wasteful number, since it uses less digits than its factorization.

115205201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103710.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 115205201 is about 10733.3685765467. The cubic root of 115205201 is about 486.5834821127.

Adding to 115205201 its reverse (102502511), we get a palindrome (217707712).

The spelling of 115205201 in words is "one hundred fifteen million, two hundred five thousand, two hundred one".

Divisors: 1 1123 102587 115205201