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9201 = 33067
BaseRepresentation
bin10001111110001
3110121210
42033301
5243301
6110333
735553
oct21761
913553
109201
116a05
1253a9
13425a
1434d3
152ad6
hex23f1

9201 has 4 divisors (see below), whose sum is σ = 12272. Its totient is φ = 6132.

The previous prime is 9199. The next prime is 9203. The reversal of 9201 is 1029.

It is a happy number.

9201 is nontrivially palindromic in base 2 and base 7.

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 an interprime number because it is at equal distance from previous prime (9199) and next prime (9203).

It is not a de Polignac number, because 9201 - 21 = 9199 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9203) 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, 1531 + ... + 1536.

It is an arithmetic number, because the mean of its divisors is an integer number (3068).

29201 is an apocalyptic number.

It is an amenable number.

9201 is a deficient number, since it is larger than the sum of its proper divisors (3071).

9201 is a wasteful number, since it uses less digits than its factorization.

9201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3070.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 9201 is about 95.9218431850. The cubic root of 9201 is about 20.9545502313.

It can be divided in two parts, 9 and 201, that added together give a triangular number (210 = T20).

The spelling of 9201 in words is "nine thousand, two hundred one".

Divisors: 1 3 3067 9201