139275571 has 2 divisors, whose sum is σ = 139275572. Its totient is φ = 139275570.

The previous prime is 139275569. The next prime is 139275599. The reversal of 139275571 is 175572931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139275571 - 2¹ = 139275569 is a prime.

Together with 139275569, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (139275541) 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, 69637785 + 69637786.

It is an arithmetic number, because the mean of its divisors is an integer number (69637786).

Almost surely, 2^139275571 is an apocalyptic number.

139275571 is a deficient number, since it is larger than the sum of its proper divisors (1).

139275571 is an equidigital number, since it uses as much as digits as its factorization.

139275571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 66150, while the sum is 40.

The square root of 139275571 is about 11801.5071495127. The cubic root of 139275571 is about 518.3522434855.

The spelling of 139275571 in words is "one hundred thirty-nine million, two hundred seventy-five thousand, five hundred seventy-one".