85804577 has 2 divisors, whose sum is σ = 85804578. Its totient is φ = 85804576.

The previous prime is 85804573. The next prime is 85804603. The reversal of 85804577 is 77540858.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73805281 + 11999296 = 8591^2 + 3464^2 .

It is a cyclic number.

It is not a de Polignac number, because 85804577 - 2² = 85804573 is a prime.

It is not a weakly prime, because it can be changed into another prime (85804571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42902288 + 42902289.

It is an arithmetic number, because the mean of its divisors is an integer number (42902289).

Almost surely, 2^85804577 is an apocalyptic number.

It is an amenable number.

85804577 is a deficient number, since it is larger than the sum of its proper divisors (1).

85804577 is an equidigital number, since it uses as much as digits as its factorization.

85804577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 313600, while the sum is 44.

The square root of 85804577 is about 9263.0760009837. The cubic root of 85804577 is about 441.0659023311.

The spelling of 85804577 in words is "eighty-five million, eight hundred four thousand, five hundred seventy-seven".