85066523 has 2 divisors, whose sum is σ = 85066524. Its totient is φ = 85066522.

The previous prime is 85066519. The next prime is 85066559. The reversal of 85066523 is 32566058.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85066523 - 2² = 85066519 is a prime.

It is equal to p_4947326 and since 85066523 and 4947326 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (85066123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42533261 + 42533262.

It is an arithmetic number, because the mean of its divisors is an integer number (42533262).

Almost surely, 2^85066523 is an apocalyptic number.

85066523 is a deficient number, since it is larger than the sum of its proper divisors (1).

85066523 is an equidigital number, since it uses as much as digits as its factorization.

85066523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 85066523 is about 9223.1514679094. The cubic root of 85066523 is about 439.7976393845.

The spelling of 85066523 in words is "eighty-five million, sixty-six thousand, five hundred twenty-three".