Search a number
-
+
200020001 = 569351529
BaseRepresentation
bin10111110110000…
…01000000100001
3111221101001212012
423323001000201
5402201120001
631503042305
74646066456
oct1373010041
9457331765
10200020001
11a29a6a95
1256ba0395
133259343c
141c7c982d
15128602bb
hexbec1021

200020001 has 4 divisors (see below), whose sum is σ = 200372100. Its totient is φ = 199667904.

The previous prime is 200019997. The next prime is 200020031. The reversal of 200020001 is 100020002.

200020001 = 100002 + 100012.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100020002 = 250010001.

It can be written as a sum of positive squares in 2 ways, for example, as 100020001 + 100000000 = 10001^2 + 10000^2 .

It is a cyclic number.

It is not a de Polignac number, because 200020001 - 22 = 200019997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200020031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175196 + ... + 176333.

It is an arithmetic number, because the mean of its divisors is an integer number (50093025).

Almost surely, 2200020001 is an apocalyptic number.

200020001 is the 10001-st centered square number.

It is an amenable number.

200020001 is a deficient number, since it is larger than the sum of its proper divisors (352099).

200020001 is an equidigital number, since it uses as much as digits as its factorization.

200020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352098.

The product of its (nonzero) digits is 4, while the sum is 5.

The square root of 200020001 is about 14142.8427481889. The cubic root of 200020001 is about 584.8230414190.

Adding to 200020001 its reverse (100020002), we get a palindrome (300040003).

Subtracting from 200020001 its reverse (100020002), we obtain a palindrome (99999999).

The spelling of 200020001 in words is "two hundred million, twenty thousand, one".

Divisors: 1 569 351529 200020001