85555905 has 8 divisors (see below), whose sum is σ = 136889472. Its totient is φ = 45629808.

The previous prime is 85555903. The next prime is 85555907. The reversal of 85555905 is 50955558.

It is an interprime number because it is at equal distance from previous prime (85555903) and next prime (85555907).

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

It is not a de Polignac number, because 85555905 - 2¹ = 85555903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85555901) by changing a digit.

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, 2851849 + ... + 2851878.

It is an arithmetic number, because the mean of its divisors is an integer number (17111184).

Almost surely, 2^85555905 is an apocalyptic number.

It is an amenable number.

85555905 is a deficient number, since it is larger than the sum of its proper divisors (51333567).

85555905 is a wasteful number, since it uses less digits than its factorization.

85555905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5703735.

The product of its (nonzero) digits is 225000, while the sum is 42.

The square root of 85555905 is about 9249.6435066439. The cubic root of 85555905 is about 440.6394026780.

The spelling of 85555905 in words is "eighty-five million, five hundred fifty-five thousand, nine hundred five".