85518193 has 2 divisors, whose sum is σ = 85518194. Its totient is φ = 85518192.

The previous prime is 85518161. The next prime is 85518217. The reversal of 85518193 is 39181558.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85229824 + 288369 = 9232^2 + 537^2 .

It is a cyclic number.

It is not a de Polignac number, because 85518193 - 2⁵ = 85518161 is a prime.

It is a super-2 number, since 2×85518193² = 14626722667970498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85518793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42759096 + 42759097.

It is an arithmetic number, because the mean of its divisors is an integer number (42759097).

Almost surely, 2^85518193 is an apocalyptic number.

It is an amenable number.

85518193 is a deficient number, since it is larger than the sum of its proper divisors (1).

85518193 is an equidigital number, since it uses as much as digits as its factorization.

85518193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 40.

The square root of 85518193 is about 9247.6047168983. The cubic root of 85518193 is about 440.5746503372.

The spelling of 85518193 in words is "eighty-five million, five hundred eighteen thousand, one hundred ninety-three".