85529077 has 2 divisors, whose sum is σ = 85529078. Its totient is φ = 85529076.

The previous prime is 85529027. The next prime is 85529141. The reversal of 85529077 is 77092558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78163281 + 7365796 = 8841^2 + 2714^2 .

It is a cyclic number.

It is not a de Polignac number, because 85529077 - 2¹⁵ = 85496309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85529027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42764538 + 42764539.

It is an arithmetic number, because the mean of its divisors is an integer number (42764539).

Almost surely, 2^85529077 is an apocalyptic number.

It is an amenable number.

85529077 is a deficient number, since it is larger than the sum of its proper divisors (1).

85529077 is an equidigital number, since it uses as much as digits as its factorization.

85529077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 176400, while the sum is 43.

The square root of 85529077 is about 9248.1931748856. The cubic root of 85529077 is about 440.5933403606.

The spelling of 85529077 in words is "eighty-five million, five hundred twenty-nine thousand, seventy-seven".