136509275 has 24 divisors (see below), whose sum is σ = 199701504. Its totient is φ = 90583200.

The previous prime is 136509271. The next prime is 136509313. The reversal of 136509275 is 572905631.

It is a happy number.

It is not a de Polignac number, because 136509275 - 2² = 136509271 is a prime.

It is a super-2 number, since 2×136509275² = 37269564322051250, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136509271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7157 + ... + 18006.

It is an arithmetic number, because the mean of its divisors is an integer number (8320896).

Almost surely, 2^136509275 is an apocalyptic number.

136509275 is a deficient number, since it is larger than the sum of its proper divisors (63192229).

136509275 is a wasteful number, since it uses less digits than its factorization.

136509275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25211 (or 25206 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 136509275 is about 11683.7183721622. The cubic root of 136509275 is about 514.8974251361.

The spelling of 136509275 in words is "one hundred thirty-six million, five hundred nine thousand, two hundred seventy-five".