85357579 has 2 divisors, whose sum is σ = 85357580. Its totient is φ = 85357578.

The previous prime is 85357553. The next prime is 85357619. The reversal of 85357579 is 97575358.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85357579 - 2⁹ = 85357067 is a prime.

It is not a weakly prime, because it can be changed into another prime (85357529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42678789 + 42678790.

It is an arithmetic number, because the mean of its divisors is an integer number (42678790).

Almost surely, 2^85357579 is an apocalyptic number.

85357579 is a deficient number, since it is larger than the sum of its proper divisors (1).

85357579 is an equidigital number, since it uses as much as digits as its factorization.

85357579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1323000, while the sum is 49.

The square root of 85357579 is about 9238.9165490332. The cubic root of 85357579 is about 440.2986591476.

The spelling of 85357579 in words is "eighty-five million, three hundred fifty-seven thousand, five hundred seventy-nine".