852128539 has 2 divisors, whose sum is σ = 852128540. Its totient is φ = 852128538.

The previous prime is 852128531. The next prime is 852128551. The reversal of 852128539 is 935821258.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 852128539 - 2³ = 852128531 is a prime.

It is a super-2 number, since 2×852128539² = 1452246093956549042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 852128495 and 852128504.

It is not a weakly prime, because it can be changed into another prime (852128531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426064269 + 426064270.

It is an arithmetic number, because the mean of its divisors is an integer number (426064270).

Almost surely, 2^852128539 is an apocalyptic number.

852128539 is a deficient number, since it is larger than the sum of its proper divisors (1).

852128539 is an equidigital number, since it uses as much as digits as its factorization.

852128539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 43.

The square root of 852128539 is about 29191.2407924021. The cubic root of 852128539 is about 948.0582829419.

The spelling of 852128539 in words is "eight hundred fifty-two million, one hundred twenty-eight thousand, five hundred thirty-nine".