115611553 has 2 divisors, whose sum is σ = 115611554. Its totient is φ = 115611552.

The previous prime is 115611541. The next prime is 115611583. The reversal of 115611553 is 355116511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70761744 + 44849809 = 8412^2 + 6697^2 .

It is a cyclic number.

It is not a de Polignac number, because 115611553 - 2⁵ = 115611521 is a prime.

It is not a weakly prime, because it can be changed into another prime (115611583) 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, 57805776 + 57805777.

It is an arithmetic number, because the mean of its divisors is an integer number (57805777).

Almost surely, 2^115611553 is an apocalyptic number.

It is an amenable number.

115611553 is a deficient number, since it is larger than the sum of its proper divisors (1).

115611553 is an equidigital number, since it uses as much as digits as its factorization.

115611553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2250, while the sum is 28.

The square root of 115611553 is about 10752.2812928234. The cubic root of 115611553 is about 487.1549035209.

The spelling of 115611553 in words is "one hundred fifteen million, six hundred eleven thousand, five hundred fifty-three".