55518085 has 16 divisors (see below), whose sum is σ = 76260096. Its totient is φ = 38009088.

The previous prime is 55518077. The next prime is 55518101. The reversal of 55518085 is 58081555.

55518085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 55518085 - 2³ = 55518077 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 15 ways as a sum of consecutive naturals, for example, 42157 + ... + 43453.

It is an arithmetic number, because the mean of its divisors is an integer number (4766256).

Almost surely, 2^55518085 is an apocalyptic number.

It is an amenable number.

55518085 is a deficient number, since it is larger than the sum of its proper divisors (20742011).

55518085 is a wasteful number, since it uses less digits than its factorization.

55518085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2532.

The product of its (nonzero) digits is 40000, while the sum is 37.

The square root of 55518085 is about 7451.0458997378. The cubic root of 55518085 is about 381.4856087332.

The spelling of 55518085 in words is "fifty-five million, five hundred eighteen thousand, eighty-five".