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BaseRepresentation
bin11100000111001111
312211221212
4130013033
512141101
62245035
7656501
oct340717
9184855
10115151
1179573
125677b
134054a
142dd71
15241bb
hex1c1cf

115151 has 2 divisors, whose sum is σ = 115152. Its totient is φ = 115150.

The previous prime is 115133. The next prime is 115153. The reversal of 115151 is 151511.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-115151 is a prime.

It is a Sophie Germain prime.

Together with 115153, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 12.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57575 + 57576.

It is an arithmetic number, because the mean of its divisors is an integer number (57576).

2115151 is an apocalyptic number.

115151 is a deficient number, since it is larger than the sum of its proper divisors (1).

115151 is an equidigital number, since it uses as much as digits as its factorization.

115151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25, while the sum is 14.

The square root of 115151 is about 339.3390634749. The cubic root of 115151 is about 48.6507161923.

Adding to 115151 its reverse (151511), we get a palindrome (266662).

The spelling of 115151 in words is "one hundred fifteen thousand, one hundred fifty-one".