85163123 has 2 divisors, whose sum is σ = 85163124. Its totient is φ = 85163122.

The previous prime is 85163093. The next prime is 85163129. The reversal of 85163123 is 32136158.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85163123 - 2¹⁶ = 85097587 is a prime.

It is a super-2 number, since 2×85163123² = 14505515038226258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85163129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42581561 + 42581562.

It is an arithmetic number, because the mean of its divisors is an integer number (42581562).

Almost surely, 2^85163123 is an apocalyptic number.

85163123 is a deficient number, since it is larger than the sum of its proper divisors (1).

85163123 is an equidigital number, since it uses as much as digits as its factorization.

85163123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 85163123 is about 9228.3868037702. The cubic root of 85163123 is about 439.9640518152.

The spelling of 85163123 in words is "eighty-five million, one hundred sixty-three thousand, one hundred twenty-three".