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8200161 = 32911129
BaseRepresentation
bin11111010001111111100001
3120102121111200
4133101333201
54044401121
6451431413
7126462114
oct37217741
916377450
108200161
1146a09a2
1228b5569
131911588
14113657b
15abea26
hex7d1fe1

8200161 has 6 divisors (see below), whose sum is σ = 11844690. Its totient is φ = 5466768.

The previous prime is 8200147. The next prime is 8200177. The reversal of 8200161 is 1610028.

It can be written as a sum of positive squares in only one way, i.e., 5377761 + 2822400 = 2319^2 + 1680^2 .

It is not a de Polignac number, because 8200161 - 29 = 8199649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8200141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 455556 + ... + 455573.

It is an arithmetic number, because the mean of its divisors is an integer number (1974115).

Almost surely, 28200161 is an apocalyptic number.

It is an amenable number.

8200161 is a deficient number, since it is larger than the sum of its proper divisors (3644529).

8200161 is a wasteful number, since it uses less digits than its factorization.

8200161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911135 (or 911132 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 8200161 is about 2863.5923243367. The cubic root of 8200161 is about 201.6542872745.

Adding to 8200161 its reverse (1610028), we get a palindrome (9810189).

The spelling of 8200161 in words is "eight million, two hundred thousand, one hundred sixty-one".

Divisors: 1 3 9 911129 2733387 8200161