137866271 has 2 divisors, whose sum is σ = 137866272. Its totient is φ = 137866270.

The previous prime is 137866249. The next prime is 137866279. The reversal of 137866271 is 172668731.

It is a strong prime.

It is an emirp because it is prime and its reverse (172668731) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137866271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137866279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68933135 + 68933136.

It is an arithmetic number, because the mean of its divisors is an integer number (68933136).

Almost surely, 2^137866271 is an apocalyptic number.

137866271 is a deficient number, since it is larger than the sum of its proper divisors (1).

137866271 is an equidigital number, since it uses as much as digits as its factorization.

137866271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 41.

The square root of 137866271 is about 11741.6468606410. The cubic root of 137866271 is about 516.5979474797.

The spelling of 137866271 in words is "one hundred thirty-seven million, eight hundred sixty-six thousand, two hundred seventy-one".