85259477 has 2 divisors, whose sum is σ = 85259478. Its totient is φ = 85259476.

The previous prime is 85259467. The next prime is 85259501. The reversal of 85259477 is 77495258.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84474481 + 784996 = 9191^2 + 886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85259477 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85259467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42629738 + 42629739.

It is an arithmetic number, because the mean of its divisors is an integer number (42629739).

Almost surely, 2^85259477 is an apocalyptic number.

It is an amenable number.

85259477 is a deficient number, since it is larger than the sum of its proper divisors (1).

85259477 is an equidigital number, since it uses as much as digits as its factorization.

85259477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 705600, while the sum is 47.

The square root of 85259477 is about 9233.6058503707. The cubic root of 85259477 is about 440.1299151497.

The spelling of 85259477 in words is "eighty-five million, two hundred fifty-nine thousand, four hundred seventy-seven".