85560931 has 2 divisors, whose sum is σ = 85560932. Its totient is φ = 85560930.

The previous prime is 85560913. The next prime is 85561061. The reversal of 85560931 is 13906558.

Together with previous prime (85560913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85560931 - 2¹⁹ = 85036643 is a prime.

It is a super-2 number, since 2×85560931² = 14641345827173522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85560331) 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, 42780465 + 42780466.

It is an arithmetic number, because the mean of its divisors is an integer number (42780466).

Almost surely, 2^85560931 is an apocalyptic number.

85560931 is a deficient number, since it is larger than the sum of its proper divisors (1).

85560931 is an equidigital number, since it uses as much as digits as its factorization.

85560931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 85560931 is about 9249.9151888004. The cubic root of 85560931 is about 440.6480309944.

The spelling of 85560931 in words is "eighty-five million, five hundred sixty thousand, nine hundred thirty-one".