204136157 has 2 divisors, whose sum is σ = 204136158. Its totient is φ = 204136156.

The previous prime is 204136151. The next prime is 204136169. The reversal of 204136157 is 751631402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184253476 + 19882681 = 13574^2 + 4459^2 .

It is a cyclic number.

It is not a de Polignac number, because 204136157 - 2²² = 199941853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204136151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102068078 + 102068079.

It is an arithmetic number, because the mean of its divisors is an integer number (102068079).

Almost surely, 2^204136157 is an apocalyptic number.

It is an amenable number.

204136157 is a deficient number, since it is larger than the sum of its proper divisors (1).

204136157 is an equidigital number, since it uses as much as digits as its factorization.

204136157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 204136157 is about 14287.6225104109. The cubic root of 204136157 is about 588.8074705853.

Adding to 204136157 its reverse (751631402), we get a palindrome (955767559).

The spelling of 204136157 in words is "two hundred four million, one hundred thirty-six thousand, one hundred fifty-seven".