140557271 has 2 divisors, whose sum is σ = 140557272. Its totient is φ = 140557270.

The previous prime is 140557259. The next prime is 140557273. The reversal of 140557271 is 172755041.

It is a strong prime.

It is an emirp because it is prime and its reverse (172755041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140557271 is a prime.

It is a Sophie Germain prime.

Together with 140557273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140557273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70278635 + 70278636.

It is an arithmetic number, because the mean of its divisors is an integer number (70278636).

Almost surely, 2^140557271 is an apocalyptic number.

140557271 is a deficient number, since it is larger than the sum of its proper divisors (1).

140557271 is an equidigital number, since it uses as much as digits as its factorization.

140557271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9800, while the sum is 32.

The square root of 140557271 is about 11855.6851763194. The cubic root of 140557271 is about 519.9374567284.

The spelling of 140557271 in words is "one hundred forty million, five hundred fifty-seven thousand, two hundred seventy-one".