204156137 has 2 divisors, whose sum is σ = 204156138. Its totient is φ = 204156136.

The previous prime is 204156103. The next prime is 204156151. The reversal of 204156137 is 731651402.

204156137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109599961 + 94556176 = 10469^2 + 9724^2 .

It is a cyclic number.

It is not a de Polignac number, because 204156137 - 2¹⁸ = 203893993 is a prime.

It is not a weakly prime, because it can be changed into another prime (204156157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102078068 + 102078069.

It is an arithmetic number, because the mean of its divisors is an integer number (102078069).

Almost surely, 2^204156137 is an apocalyptic number.

It is an amenable number.

204156137 is a deficient number, since it is larger than the sum of its proper divisors (1).

204156137 is an equidigital number, since it uses as much as digits as its factorization.

204156137 is an evil number, because the sum of its binary digits is even.

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

The square root of 204156137 is about 14288.3216999058. The cubic root of 204156137 is about 588.8266799692.

The spelling of 204156137 in words is "two hundred four million, one hundred fifty-six thousand, one hundred thirty-seven".