85381063 has 2 divisors, whose sum is σ = 85381064. Its totient is φ = 85381062.

The previous prime is 85380973. The next prime is 85381091. The reversal of 85381063 is 36018358.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85381063 - 2¹⁷ = 85249991 is a prime.

It is equal to p_4964551 and since 85381063 and 4964551 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85381363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42690531 + 42690532.

It is an arithmetic number, because the mean of its divisors is an integer number (42690532).

Almost surely, 2^85381063 is an apocalyptic number.

85381063 is a deficient number, since it is larger than the sum of its proper divisors (1).

85381063 is an equidigital number, since it uses as much as digits as its factorization.

85381063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 85381063 is about 9240.1873898747. The cubic root of 85381063 is about 440.3390344946.

The spelling of 85381063 in words is "eighty-five million, three hundred eighty-one thousand, sixty-three".