85506359 has 2 divisors, whose sum is σ = 85506360. Its totient is φ = 85506358.

The previous prime is 85506353. The next prime is 85506389. The reversal of 85506359 is 95360558.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85506359 is a prime.

It is a super-2 number, since 2×85506359² = 14622674858873762, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85506353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42753179 + 42753180.

It is an arithmetic number, because the mean of its divisors is an integer number (42753180).

Almost surely, 2^85506359 is an apocalyptic number.

85506359 is a deficient number, since it is larger than the sum of its proper divisors (1).

85506359 is an equidigital number, since it uses as much as digits as its factorization.

85506359 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 85506359 is about 9246.9648533992. The cubic root of 85506359 is about 440.5543271727.

The spelling of 85506359 in words is "eighty-five million, five hundred six thousand, three hundred fifty-nine".