Search a number
-
+
261043 is a prime number
BaseRepresentation
bin111111101110110011
3111021002021
4333232303
531323133
65332311
72135026
oct775663
9437067
10261043
11169142
12107097
1391a83
146b1bd
155252d
hex3fbb3

261043 has 2 divisors, whose sum is σ = 261044. Its totient is φ = 261042.

The previous prime is 261031. The next prime is 261059. The reversal of 261043 is 340162.

It is an a-pointer prime, because the next prime (261059) can be obtained adding 261043 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 261043 - 25 = 261011 is a prime.

It is not a weakly prime, because it can be changed into another prime (261013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130521 + 130522.

It is an arithmetic number, because the mean of its divisors is an integer number (130522).

2261043 is an apocalyptic number.

261043 is a deficient number, since it is larger than the sum of its proper divisors (1).

261043 is an equidigital number, since it uses as much as digits as its factorization.

261043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 261043 is about 510.9236733603. The cubic root of 261043 is about 63.9102746582.

The spelling of 261043 in words is "two hundred sixty-one thousand, forty-three".