85420055 has 8 divisors (see below), whose sum is σ = 117147552. Its totient is φ = 58573728.

The previous prime is 85420039. The next prime is 85420079. The reversal of 85420055 is 55002458.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85420055 - 2⁴ = 85420039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1220252 + ... + 1220321.

It is an arithmetic number, because the mean of its divisors is an integer number (14643444).

Almost surely, 2^85420055 is an apocalyptic number.

85420055 is a deficient number, since it is larger than the sum of its proper divisors (31727497).

85420055 is a wasteful number, since it uses less digits than its factorization.

85420055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2440585.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 85420055 is about 9242.2970629601. The cubic root of 85420055 is about 440.4060559393.

The spelling of 85420055 in words is "eighty-five million, four hundred twenty thousand, fifty-five".