85405027 has 2 divisors, whose sum is σ = 85405028. Its totient is φ = 85405026.

The previous prime is 85405013. The next prime is 85405043. The reversal of 85405027 is 72050458.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85405027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85405027.

It is not a weakly prime, because it can be changed into another prime (85465027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42702513 + 42702514.

It is an arithmetic number, because the mean of its divisors is an integer number (42702514).

Almost surely, 2^85405027 is an apocalyptic number.

85405027 is a deficient number, since it is larger than the sum of its proper divisors (1).

85405027 is an equidigital number, since it uses as much as digits as its factorization.

85405027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 85405027 is about 9241.4840258478. The cubic root of 85405027 is about 440.3802274600.

The spelling of 85405027 in words is "eighty-five million, four hundred five thousand, twenty-seven".