Search a number
-
+
811022001 = 3270340667
BaseRepresentation
bin110000010101110…
…011011010110001
32002112002012000220
4300111303122301
53130110201001
6212251003253
726045400426
oct6025633261
92075065026
10811022001
11386889919
121a7739529
13cc04199a
14799d7d4d
154b302c36
hex305736b1

811022001 has 4 divisors (see below), whose sum is σ = 1081362672. Its totient is φ = 540681332.

The previous prime is 811021999. The next prime is 811022071. The reversal of 811022001 is 100220118.

811022001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 811022001 - 21 = 811021999 is a prime.

It is a super-2 number, since 2×8110220012 = 1315513372212088002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (811022071) 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, 135170331 + ... + 135170336.

It is an arithmetic number, because the mean of its divisors is an integer number (270340668).

Almost surely, 2811022001 is an apocalyptic number.

It is an amenable number.

811022001 is a deficient number, since it is larger than the sum of its proper divisors (270340671).

811022001 is a wasteful number, since it uses less digits than its factorization.

811022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270340670.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 811022001 is about 28478.4480089769. The cubic root of 811022001 is about 932.5616357470.

Adding to 811022001 its reverse (100220118), we get a palindrome (911242119).

The spelling of 811022001 in words is "eight hundred eleven million, twenty-two thousand, one".

Divisors: 1 3 270340667 811022001