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115769 is a prime number
BaseRepresentation
bin11100010000111001
312212210202
4130100321
512201034
62251545
7661343
oct342071
9185722
10115769
1179a85
1256bb5
1340904
1430293
152447e
hex1c439

115769 has 2 divisors, whose sum is σ = 115770. Its totient is φ = 115768.

The previous prime is 115763. The next prime is 115771. The reversal of 115769 is 967511.

It is a happy number.

115769 is nontrivially palindromic in base 13.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115600 + 169 = 340^2 + 13^2 .

It is an emirp because it is prime and its reverse (967511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115769 - 28 = 115513 is a prime.

It is a super-2 number, since 2×1157692 = 26804922722, which contains 22 as substring.

Together with 115771, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (115763) 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, 57884 + 57885.

It is an arithmetic number, because the mean of its divisors is an integer number (57885).

2115769 is an apocalyptic number.

It is an amenable number.

115769 is a deficient number, since it is larger than the sum of its proper divisors (1).

115769 is an equidigital number, since it uses as much as digits as its factorization.

115769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1890, while the sum is 29.

The square root of 115769 is about 340.2484386445. The cubic root of 115769 is about 48.7375949151.

The spelling of 115769 in words is "one hundred fifteen thousand, seven hundred sixty-nine".