139254571 has 2 divisors, whose sum is σ = 139254572. Its totient is φ = 139254570.

The previous prime is 139254541. The next prime is 139254601. The reversal of 139254571 is 175452931.

139254571 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (139254541) and next prime (139254601).

It is an emirp because it is prime and its reverse (175452931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139254571 - 2⁵ = 139254539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139254571.

It is not a weakly prime, because it can be changed into another prime (139254541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69627285 + 69627286.

It is an arithmetic number, because the mean of its divisors is an integer number (69627286).

Almost surely, 2^139254571 is an apocalyptic number.

139254571 is a deficient number, since it is larger than the sum of its proper divisors (1).

139254571 is an equidigital number, since it uses as much as digits as its factorization.

139254571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 37.

The square root of 139254571 is about 11800.6173991025. The cubic root of 139254571 is about 518.3261897558.

It can be divided in two parts, 13925 and 4571, that added together give a square (18496 = 136²).

The spelling of 139254571 in words is "one hundred thirty-nine million, two hundred fifty-four thousand, five hundred seventy-one".