136745253 has 10 divisors (see below), whose sum is σ = 204273894. Its totient is φ = 91163448.

The previous prime is 136745243. The next prime is 136745269. The reversal of 136745253 is 352547631.

136745253 is a `hidden beast` number, since 1 + 367 + 45 + 253 = 666.

It can be written as a sum of positive squares in only one way, i.e., 116251524 + 20493729 = 10782^2 + 4527^2 .

It is not a de Polignac number, because 136745253 - 2¹⁰ = 136744229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136745233) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 844026 + ... + 844187.

Almost surely, 2^136745253 is an apocalyptic number.

It is an amenable number.

136745253 is a deficient number, since it is larger than the sum of its proper divisors (67528641).

136745253 is an equidigital number, since it uses as much as digits as its factorization.

136745253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688225 (or 1688216 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 136745253 is about 11693.8125947015. The cubic root of 136745253 is about 515.1939483785.

The spelling of 136745253 in words is "one hundred thirty-six million, seven hundred forty-five thousand, two hundred fifty-three".