136591001 has 2 divisors, whose sum is σ = 136591002. Its totient is φ = 136591000.

The previous prime is 136590983. The next prime is 136591031. The reversal of 136591001 is 100195631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108659776 + 27931225 = 10424^2 + 5285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136591001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136591031) 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, 68295500 + 68295501.

It is an arithmetic number, because the mean of its divisors is an integer number (68295501).

Almost surely, 2^136591001 is an apocalyptic number.

It is an amenable number.

136591001 is a deficient number, since it is larger than the sum of its proper divisors (1).

136591001 is an equidigital number, since it uses as much as digits as its factorization.

136591001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 136591001 is about 11687.2152799544. The cubic root of 136591001 is about 515.0001583561. Note that the first 3 decimals are identical.

The spelling of 136591001 in words is "one hundred thirty-six million, five hundred ninety-one thousand, one".