136530061 has 2 divisors, whose sum is σ = 136530062. Its totient is φ = 136530060.

The previous prime is 136530059. The next prime is 136530073. The reversal of 136530061 is 160035631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119464900 + 17065161 = 10930^2 + 4131^2 .

It is a cyclic number.

It is not a de Polignac number, because 136530061 - 2¹ = 136530059 is a prime.

Together with 136530059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136530011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68265030 + 68265031.

It is an arithmetic number, because the mean of its divisors is an integer number (68265031).

Almost surely, 2^136530061 is an apocalyptic number.

It is an amenable number.

136530061 is a deficient number, since it is larger than the sum of its proper divisors (1).

136530061 is an equidigital number, since it uses as much as digits as its factorization.

136530061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 136530061 is about 11684.6078667622. The cubic root of 136530061 is about 514.9235579507.

Adding to 136530061 its reverse (160035631), we get a palindrome (296565692).

The spelling of 136530061 in words is "one hundred thirty-six million, five hundred thirty thousand, sixty-one".