136005253 has 4 divisors (see below), whose sum is σ = 144005580. Its totient is φ = 128004928.

The previous prime is 136005251. The next prime is 136005271. The reversal of 136005253 is 352500631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 352500631 = 7 ⋅50357233.

It can be written as a sum of positive squares in 2 ways, for example, as 88021924 + 47983329 = 9382^2 + 6927^2 .

It is a cyclic number.

It is not a de Polignac number, because 136005253 - 2¹ = 136005251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136005251) 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 in 3 ways as a sum of consecutive naturals, for example, 4000138 + ... + 4000171.

It is an arithmetic number, because the mean of its divisors is an integer number (36001395).

Almost surely, 2^136005253 is an apocalyptic number.

It is an amenable number.

136005253 is a deficient number, since it is larger than the sum of its proper divisors (8000327).

136005253 is an equidigital number, since it uses as much as digits as its factorization.

136005253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8000326.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 136005253 is about 11662.1290080328. The cubic root of 136005253 is about 514.2629390965.

Adding to 136005253 its reverse (352500631), we get a palindrome (488505884).

The spelling of 136005253 in words is "one hundred thirty-six million, five thousand, two hundred fifty-three".