135976553 has 2 divisors, whose sum is σ = 135976554. Its totient is φ = 135976552.

The previous prime is 135976543. The next prime is 135976579. The reversal of 135976553 is 355679531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68029504 + 67947049 = 8248^2 + 8243^2 .

It is a cyclic number.

It is not a de Polignac number, because 135976553 - 2¹⁰ = 135975529 is a prime.

It is not a weakly prime, because it can be changed into another prime (135976543) 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, 67988276 + 67988277.

It is an arithmetic number, because the mean of its divisors is an integer number (67988277).

Almost surely, 2^135976553 is an apocalyptic number.

It is an amenable number.

135976553 is a deficient number, since it is larger than the sum of its proper divisors (1).

135976553 is an equidigital number, since it uses as much as digits as its factorization.

135976553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 425250, while the sum is 44.

The square root of 135976553 is about 11660.8984645267. The cubic root of 135976553 is about 514.2267630804.

The spelling of 135976553 in words is "one hundred thirty-five million, nine hundred seventy-six thousand, five hundred fifty-three".