137787161 has 2 divisors, whose sum is σ = 137787162. Its totient is φ = 137787160.

The previous prime is 137787137. The next prime is 137787197. The reversal of 137787161 is 161787731.

137787161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102313225 + 35473936 = 10115^2 + 5956^2 .

It is a cyclic number.

It is not a de Polignac number, because 137787161 - 2¹⁴ = 137770777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (137787131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68893580 + 68893581.

It is an arithmetic number, because the mean of its divisors is an integer number (68893581).

Almost surely, 2^137787161 is an apocalyptic number.

It is an amenable number.

137787161 is a deficient number, since it is larger than the sum of its proper divisors (1).

137787161 is an equidigital number, since it uses as much as digits as its factorization.

137787161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49392, while the sum is 41.

The square root of 137787161 is about 11738.2775993755. The cubic root of 137787161 is about 516.4991176916.

The spelling of 137787161 in words is "one hundred thirty-seven million, seven hundred eighty-seven thousand, one hundred sixty-one".