136571245 has 4 divisors (see below), whose sum is σ = 163885500. Its totient is φ = 109256992.

The previous prime is 136571243. The next prime is 136571257. The reversal of 136571245 is 542175631.

136571245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50211396 + 86359849 = 7086^2 + 9293^2 .

It is a cyclic number.

It is not a de Polignac number, because 136571245 - 2¹ = 136571243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136571245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136571243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13657120 + ... + 13657129.

It is an arithmetic number, because the mean of its divisors is an integer number (40971375).

Almost surely, 2^136571245 is an apocalyptic number.

It is an amenable number.

136571245 is a deficient number, since it is larger than the sum of its proper divisors (27314255).

136571245 is an equidigital number, since it uses as much as digits as its factorization.

136571245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27314254.

The product of its digits is 25200, while the sum is 34.

The square root of 136571245 is about 11686.3700523302. The cubic root of 136571245 is about 514.9753279411.

The spelling of 136571245 in words is "one hundred thirty-six million, five hundred seventy-one thousand, two hundred forty-five".