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223001 = 269829
BaseRepresentation
bin110110011100011001
3102022220022
4312130121
524114001
64440225
71616102
oct663431
9368808
10223001
111425a9
12a9075
137a66c
145b3a9
154611b
hex36719

223001 has 4 divisors (see below), whose sum is σ = 224100. Its totient is φ = 221904.

The previous prime is 222991. The next prime is 223007. The reversal of 223001 is 100322.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 63001 + 160000 = 251^2 + 400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-223001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 223001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223007) 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, 146 + ... + 683.

It is an arithmetic number, because the mean of its divisors is an integer number (56025).

2223001 is an apocalyptic number.

It is an amenable number.

223001 is a deficient number, since it is larger than the sum of its proper divisors (1099).

223001 is an equidigital number, since it uses as much as digits as its factorization.

223001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 223001 is about 472.2298169324. The cubic root of 223001 is about 60.6413605896.

Adding to 223001 its reverse (100322), we get a palindrome (323323).

The spelling of 223001 in words is "two hundred twenty-three thousand, one", and thus it is an iban number.

Divisors: 1 269 829 223001