85510807 has 2 divisors, whose sum is σ = 85510808. Its totient is φ = 85510806.

The previous prime is 85510793. The next prime is 85510819. The reversal of 85510807 is 70801558.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85510807 is a prime.

It is a super-2 number, since 2×85510807² = 14624196227582498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85517807) 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, 42755403 + 42755404.

It is an arithmetic number, because the mean of its divisors is an integer number (42755404).

Almost surely, 2^85510807 is an apocalyptic number.

85510807 is a deficient number, since it is larger than the sum of its proper divisors (1).

85510807 is an equidigital number, since it uses as much as digits as its factorization.

85510807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11200, while the sum is 34.

The square root of 85510807 is about 9247.2053616214. The cubic root of 85510807 is about 440.5619661822.

The spelling of 85510807 in words is "eighty-five million, five hundred ten thousand, eight hundred seven".