136523201 has 2 divisors, whose sum is σ = 136523202. Its totient is φ = 136523200.

The previous prime is 136523173. The next prime is 136523281. The reversal of 136523201 is 102325631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133425601 + 3097600 = 11551^2 + 1760^2 .

It is a cyclic number.

It is not a de Polignac number, because 136523201 - 2⁶ = 136523137 is a prime.

It is a super-2 number, since 2×136523201² = 37277168822572802, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136523281) 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 as a sum of consecutive naturals, namely, 68261600 + 68261601.

It is an arithmetic number, because the mean of its divisors is an integer number (68261601).

Almost surely, 2^136523201 is an apocalyptic number.

It is an amenable number.

136523201 is a deficient number, since it is larger than the sum of its proper divisors (1).

136523201 is an equidigital number, since it uses as much as digits as its factorization.

136523201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 136523201 is about 11684.3143144987. The cubic root of 136523201 is about 514.9149336357.

Adding to 136523201 its reverse (102325631), we get a palindrome (238848832).

The spelling of 136523201 in words is "one hundred thirty-six million, five hundred twenty-three thousand, two hundred one".