85556423 has 2 divisors, whose sum is σ = 85556424. Its totient is φ = 85556422.

The previous prime is 85556417. The next prime is 85556437. The reversal of 85556423 is 32465558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85556423 - 2⁴ = 85556407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85556453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42778211 + 42778212.

It is an arithmetic number, because the mean of its divisors is an integer number (42778212).

Almost surely, 2^85556423 is an apocalyptic number.

85556423 is a deficient number, since it is larger than the sum of its proper divisors (1).

85556423 is an equidigital number, since it uses as much as digits as its factorization.

85556423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144000, while the sum is 38.

The square root of 85556423 is about 9249.6715076807. The cubic root of 85556423 is about 440.6402919630.

The spelling of 85556423 in words is "eighty-five million, five hundred fifty-six thousand, four hundred twenty-three".