115553 has 2 divisors, whose sum is σ = 115554. Its totient is φ = 115552.

The previous prime is 115547. The next prime is 115561. The reversal of 115553 is 355511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110224 + 5329 = 332^2 + 73^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115553 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (115513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57776 + 57777.

It is an arithmetic number, because the mean of its divisors is an integer number (57777).

2¹¹⁵⁵⁵³ is an apocalyptic number.

It is an amenable number.

115553 is a deficient number, since it is larger than the sum of its proper divisors (1).

115553 is an equidigital number, since it uses as much as digits as its factorization.

115553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 375, while the sum is 20.

The square root of 115553 is about 339.9308753261. The cubic root of 115553 is about 48.7072647618.

The spelling of 115553 in words is "one hundred fifteen thousand, five hundred fifty-three".