853525993 has 2 divisors, whose sum is σ = 853525994. Its totient is φ = 853525992.

The previous prime is 853525957. The next prime is 853526059. The reversal of 853525993 is 399525358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 712462864 + 141063129 = 26692^2 + 11877^2 .

It is a cyclic number.

It is not a de Polignac number, because 853525993 - 2²⁵ = 819971561 is a prime.

It is not a weakly prime, because it can be changed into another prime (853525913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426762996 + 426762997.

It is an arithmetic number, because the mean of its divisors is an integer number (426762997).

Almost surely, 2^853525993 is an apocalyptic number.

It is an amenable number.

853525993 is a deficient number, since it is larger than the sum of its proper divisors (1).

853525993 is an equidigital number, since it uses as much as digits as its factorization.

853525993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1458000, while the sum is 49.

The square root of 853525993 is about 29215.1671739184. The cubic root of 853525993 is about 948.5762581050.

The spelling of 853525993 in words is "eight hundred fifty-three million, five hundred twenty-five thousand, nine hundred ninety-three".