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256201 = 1123291
BaseRepresentation
bin111110100011001001
3111000102221
4332203021
531144301
65254041
72114641
oct764311
9430387
10256201
11165540
12104321
138c7ca
1469521
1550da1
hex3e8c9

256201 has 4 divisors (see below), whose sum is σ = 279504. Its totient is φ = 232900.

The previous prime is 256199. The next prime is 256211. The reversal of 256201 is 102652.

It is a happy number.

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 256201 - 21 = 256199 is a prime.

It is a Duffinian number.

256201 is a lucky number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (256211) 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, 11635 + ... + 11656.

It is an arithmetic number, because the mean of its divisors is an integer number (69876).

2256201 is an apocalyptic number.

It is an amenable number.

256201 is a deficient number, since it is larger than the sum of its proper divisors (23303).

256201 is a wasteful number, since it uses less digits than its factorization.

256201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23302.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 256201 is about 506.1630172188. The cubic root of 256201 is about 63.5126558361.

Adding to 256201 its reverse (102652), we get a palindrome (358853).

It can be divided in two parts, 25 and 6201, that added together give a palindrome (6226).

The spelling of 256201 in words is "two hundred fifty-six thousand, two hundred one".

Divisors: 1 11 23291 256201