137640271 has 2 divisors, whose sum is σ = 137640272. Its totient is φ = 137640270.

The previous prime is 137640253. The next prime is 137640277. The reversal of 137640271 is 172046731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137640271 - 2⁹ = 137639759 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137640277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68820135 + 68820136.

It is an arithmetic number, because the mean of its divisors is an integer number (68820136).

Almost surely, 2^137640271 is an apocalyptic number.

137640271 is a deficient number, since it is larger than the sum of its proper divisors (1).

137640271 is an equidigital number, since it uses as much as digits as its factorization.

137640271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 137640271 is about 11732.0190504448. The cubic root of 137640271 is about 516.3155119742.

The spelling of 137640271 in words is "one hundred thirty-seven million, six hundred forty thousand, two hundred seventy-one".