Search a number
BaseRepresentation
bin10011101011
31201122
4103223
520014
65455
73446
oct2353
91648
101259
11a45
1288b
1375b
1465d
1558e
hex4eb

1259 has 2 divisors, whose sum is σ = 1260. Its totient is φ = 1258.

The previous prime is 1249. The next prime is 1277. The reversal of 1259 is 9521.

It is a weak prime.

It is an emirp because it is prime and its reverse (9521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1259 is a prime.

It is a Chen prime.

It is a plaindrome in base 7, base 10, base 12 and base 15.

It is not a weakly prime, because it can be changed into another prime (1229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 629 + 630.

It is an arithmetic number, because the mean of its divisors is an integer number (630).

21259 is an apocalyptic number.

1259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1259 is an equidigital number, since it uses as much as digits as its factorization.

1259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90, while the sum is 17.

The square root of 1259 is about 35.4823899984. The cubic root of 1259 is about 10.7979648657.

The spelling of 1259 in words is "one thousand, two hundred fifty-nine".