Search a number
-
+
201461 = 1315497
BaseRepresentation
bin110001001011110101
3101020100112
4301023311
522421321
64152405
71466231
oct611365
9336315
10201461
111283a7
1298705
1370910
14535c1
153ea5b
hex312f5

201461 has 4 divisors (see below), whose sum is σ = 216972. Its totient is φ = 185952.

The previous prime is 201451. The next prime is 201473. The reversal of 201461 is 164102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 164102 = 282051.

It can be written as a sum of positive squares in 2 ways, for example, as 122500 + 78961 = 350^2 + 281^2 .

It is not a de Polignac number, because 201461 - 210 = 200437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201401) 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, 7736 + ... + 7761.

It is an arithmetic number, because the mean of its divisors is an integer number (54243).

2201461 is an apocalyptic number.

It is an amenable number.

201461 is a deficient number, since it is larger than the sum of its proper divisors (15511).

201461 is a wasteful number, since it uses less digits than its factorization.

201461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15510.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 201461 is about 448.8440709200. The cubic root of 201461 is about 58.6224090853.

Adding to 201461 its reverse (164102), we get a palindrome (365563).

The spelling of 201461 in words is "two hundred one thousand, four hundred sixty-one".

Divisors: 1 13 15497 201461