136561351 has 2 divisors, whose sum is σ = 136561352. Its totient is φ = 136561350.

The previous prime is 136561349. The next prime is 136561363. The reversal of 136561351 is 153165631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136561351 - 2¹ = 136561349 is a prime.

Together with 136561349, 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 (136561301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68280675 + 68280676.

It is an arithmetic number, because the mean of its divisors is an integer number (68280676).

Almost surely, 2^136561351 is an apocalyptic number.

136561351 is a deficient number, since it is larger than the sum of its proper divisors (1).

136561351 is an equidigital number, since it uses as much as digits as its factorization.

136561351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 31.

The square root of 136561351 is about 11685.9467310099. The cubic root of 136561351 is about 514.9628917241.

The spelling of 136561351 in words is "one hundred thirty-six million, five hundred sixty-one thousand, three hundred fifty-one".