137439061 has 2 divisors, whose sum is σ = 137439062. Its totient is φ = 137439060.

The previous prime is 137439023. The next prime is 137439077. The reversal of 137439061 is 160934731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115992900 + 21446161 = 10770^2 + 4631^2 .

It is a cyclic number.

It is not a de Polignac number, because 137439061 - 2⁷ = 137438933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137439361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68719530 + 68719531.

It is an arithmetic number, because the mean of its divisors is an integer number (68719531).

Almost surely, 2^137439061 is an apocalyptic number.

It is an amenable number.

137439061 is a deficient number, since it is larger than the sum of its proper divisors (1).

137439061 is an equidigital number, since it uses as much as digits as its factorization.

137439061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 137439061 is about 11723.4406639007. The cubic root of 137439061 is about 516.0637966210.

The spelling of 137439061 in words is "one hundred thirty-seven million, four hundred thirty-nine thousand, sixty-one".