115572139 has 2 divisors, whose sum is σ = 115572140. Its totient is φ = 115572138.

The previous prime is 115572133. The next prime is 115572143. The reversal of 115572139 is 931275511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115572139 - 2⁷ = 115572011 is a prime.

It is not a weakly prime, because it can be changed into another prime (115572133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57786069 + 57786070.

It is an arithmetic number, because the mean of its divisors is an integer number (57786070).

Almost surely, 2^115572139 is an apocalyptic number.

115572139 is a deficient number, since it is larger than the sum of its proper divisors (1).

115572139 is an equidigital number, since it uses as much as digits as its factorization.

115572139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9450, while the sum is 34.

The square root of 115572139 is about 10750.4483162331. The cubic root of 115572139 is about 487.0995373537.

The spelling of 115572139 in words is "one hundred fifteen million, five hundred seventy-two thousand, one hundred thirty-nine".