137806271 has 8 divisors (see below), whose sum is σ = 147143040. Its totient is φ = 128748312.

The previous prime is 137806217. The next prime is 137806283. The reversal of 137806271 is 172608731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137806271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137806211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68681 + ... + 70658.

It is an arithmetic number, because the mean of its divisors is an integer number (18392880).

Almost surely, 2^137806271 is an apocalyptic number.

137806271 is a deficient number, since it is larger than the sum of its proper divisors (9336769).

137806271 is a wasteful number, since it uses less digits than its factorization.

137806271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139405.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 137806271 is about 11739.0915747344. The cubic root of 137806271 is about 516.5229947151.

The spelling of 137806271 in words is "one hundred thirty-seven million, eight hundred six thousand, two hundred seventy-one".