85481177 has 2 divisors, whose sum is σ = 85481178. Its totient is φ = 85481176.

The previous prime is 85481161. The next prime is 85481189. The reversal of 85481177 is 77118458.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79049881 + 6431296 = 8891^2 + 2536^2 .

It is a cyclic number.

It is not a de Polignac number, because 85481177 - 2⁴ = 85481161 is a prime.

It is not a weakly prime, because it can be changed into another prime (85481107) 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, 42740588 + 42740589.

It is an arithmetic number, because the mean of its divisors is an integer number (42740589).

Almost surely, 2^85481177 is an apocalyptic number.

It is an amenable number.

85481177 is a deficient number, since it is larger than the sum of its proper divisors (1).

85481177 is an equidigital number, since it uses as much as digits as its factorization.

85481177 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62720, while the sum is 41.

The square root of 85481177 is about 9245.6031171579. The cubic root of 85481177 is about 440.5110745286.

It can be divided in two parts, 85481 and 177, that added together give a palindrome (85658).

The spelling of 85481177 in words is "eighty-five million, four hundred eighty-one thousand, one hundred seventy-seven".