85554239 has 2 divisors, whose sum is σ = 85554240. Its totient is φ = 85554238.

The previous prime is 85554233. The next prime is 85554253. The reversal of 85554239 is 93245558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85554239 - 2⁴ = 85554223 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 85554196 and 85554205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85554233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42777119 + 42777120.

It is an arithmetic number, because the mean of its divisors is an integer number (42777120).

Almost surely, 2^85554239 is an apocalyptic number.

85554239 is a deficient number, since it is larger than the sum of its proper divisors (1).

85554239 is an equidigital number, since it uses as much as digits as its factorization.

85554239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216000, while the sum is 41.

The square root of 85554239 is about 9249.5534486806. The cubic root of 85554239 is about 440.6365425208.

The spelling of 85554239 in words is "eighty-five million, five hundred fifty-four thousand, two hundred thirty-nine".