136503173 has 2 divisors, whose sum is σ = 136503174. Its totient is φ = 136503172.

The previous prime is 136503151. The next prime is 136503247. The reversal of 136503173 is 371305631.

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., 72471169 + 64032004 = 8513^2 + 8002^2 .

It is a cyclic number.

It is not a de Polignac number, because 136503173 - 2²⁰ = 135454597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136503373) 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, 68251586 + 68251587.

It is an arithmetic number, because the mean of its divisors is an integer number (68251587).

Almost surely, 2^136503173 is an apocalyptic number.

It is an amenable number.

136503173 is a deficient number, since it is larger than the sum of its proper divisors (1).

136503173 is an equidigital number, since it uses as much as digits as its factorization.

136503173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 29.

The square root of 136503173 is about 11683.4572366231. The cubic root of 136503173 is about 514.8897530057.

The spelling of 136503173 in words is "one hundred thirty-six million, five hundred three thousand, one hundred seventy-three".