Search a number
-
+
262109 is a prime number
BaseRepresentation
bin111111111111011101
3111022112202
4333333131
531341414
65341245
72141111
oct777735
9438482
10262109
11169a21
12107825
13923c3
146b741
15529de
hex3ffdd

262109 has 2 divisors, whose sum is σ = 262110. Its totient is φ = 262108.

The previous prime is 262103. The next prime is 262111. The reversal of 262109 is 901262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220900 + 41209 = 470^2 + 203^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-262109 is a prime.

It is a super-2 number, since 2×2621092 = 137402255762, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 262111, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (262103) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131054 + 131055.

It is an arithmetic number, because the mean of its divisors is an integer number (131055).

2262109 is an apocalyptic number.

It is an amenable number.

262109 is a deficient number, since it is larger than the sum of its proper divisors (1).

262109 is an equidigital number, since it uses as much as digits as its factorization.

262109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 262109 is about 511.9658191716. The cubic root of 262109 is about 63.9971515659.

The spelling of 262109 in words is "two hundred sixty-two thousand, one hundred nine".