113557 has 2 divisors, whose sum is σ = 113558.
Its totient is φ = 113556.
The previous prime is 113539. The next prime is 113567. The reversal of 113557 is 755311.
Adding to 113557 its reverse (755311), we get a palindrome (868868).
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 78961 + 34596 = 281^2 + 186^2
It is an emirp because it is prime and its reverse (755311) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 113557 - 211 = 111509 is a prime.
It is a Chen prime.
It is a plaindrome in base 10.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (113537) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56778 + 56779.
It is an arithmetic number, because the mean of its divisors is an integer number (56779).
2113557 is an apocalyptic number.
It is an amenable number.
113557 is a deficient number, since it is larger than the sum of its proper divisors (1).
113557 is an equidigital number, since it uses as much as digits as its factorization.
113557 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 525, while the sum is 22.
The square root of 113557 is about 336.9821953754.
The cubic root of 113557 is about 48.4251866724.
The spelling of 113557 in words is "one hundred thirteen thousand, five hundred fifty-seven".