85555554 has 16 divisors (see below), whose sum is σ = 195555648. Its totient is φ = 24444432.

The previous prime is 85555553. The next prime is 85555571. The reversal of 85555554 is 45555558.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 2037037 = 85555554 / (8 + 5 + 5 + 5 + 5 + 5 + 5 + 4).

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (85555553) 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, 1018477 + ... + 1018560.

It is an arithmetic number, because the mean of its divisors is an integer number (12222228).

Almost surely, 2^85555554 is an apocalyptic number.

85555554 is an abundant number, since it is smaller than the sum of its proper divisors (110000094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85555554 is a wasteful number, since it uses less digits than its factorization.

85555554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2037049.

The product of its digits is 500000, while the sum is 42.

The square root of 85555554 is about 9249.6245329202. The cubic root of 85555554 is about 440.6388000909.

The spelling of 85555554 in words is "eighty-five million, five hundred fifty-five thousand, five hundred fifty-four".