85519597 has 2 divisors, whose sum is σ = 85519598. Its totient is φ = 85519596.

The previous prime is 85519591. The next prime is 85519613. The reversal of 85519597 is 79591558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64304361 + 21215236 = 8019^2 + 4606^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85519597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85519597.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85519591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42759798 + 42759799.

It is an arithmetic number, because the mean of its divisors is an integer number (42759799).

Almost surely, 2^85519597 is an apocalyptic number.

It is an amenable number.

85519597 is a deficient number, since it is larger than the sum of its proper divisors (1).

85519597 is an equidigital number, since it uses as much as digits as its factorization.

85519597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 567000, while the sum is 49.

The square root of 85519597 is about 9247.6806281359. The cubic root of 85519597 is about 440.5770613775.

The spelling of 85519597 in words is "eighty-five million, five hundred nineteen thousand, five hundred ninety-seven".