115443553 has 2 divisors, whose sum is σ = 115443554. Its totient is φ = 115443552.

The previous prime is 115443551. The next prime is 115443599. The reversal of 115443553 is 355344511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86638864 + 28804689 = 9308^2 + 5367^2 .

It is a cyclic number.

It is not a de Polignac number, because 115443553 - 2¹ = 115443551 is a prime.

Together with 115443551, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (115443551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57721776 + 57721777.

It is an arithmetic number, because the mean of its divisors is an integer number (57721777).

Almost surely, 2^115443553 is an apocalyptic number.

It is an amenable number.

115443553 is a deficient number, since it is larger than the sum of its proper divisors (1).

115443553 is an equidigital number, since it uses as much as digits as its factorization.

115443553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18000, while the sum is 31.

The square root of 115443553 is about 10744.4661570503. The cubic root of 115443553 is about 486.9188207178.

The spelling of 115443553 in words is "one hundred fifteen million, four hundred forty-three thousand, five hundred fifty-three".