136551637 has 2 divisors, whose sum is σ = 136551638. Its totient is φ = 136551636.

The previous prime is 136551631. The next prime is 136551647. The reversal of 136551637 is 736155631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136282276 + 269361 = 11674^2 + 519^2 .

It is an emirp because it is prime and its reverse (736155631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136551637 - 2³ = 136551629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 136551596 and 136551605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136551631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68275818 + 68275819.

It is an arithmetic number, because the mean of its divisors is an integer number (68275819).

Almost surely, 2^136551637 is an apocalyptic number.

It is an amenable number.

136551637 is a deficient number, since it is larger than the sum of its proper divisors (1).

136551637 is an equidigital number, since it uses as much as digits as its factorization.

136551637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56700, while the sum is 37.

The square root of 136551637 is about 11685.5310961890. The cubic root of 136551637 is about 514.9506811728.

The spelling of 136551637 in words is "one hundred thirty-six million, five hundred fifty-one thousand, six hundred thirty-seven".