55065585 has 32 divisors (see below), whose sum is σ = 91745280. Its totient is φ = 28179648.

The previous prime is 55065581. The next prime is 55065587. The reversal of 55065585 is 58556055.

It is not a de Polignac number, because 55065585 - 2² = 55065581 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55065581) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37332 + ... + 38778.

It is an arithmetic number, because the mean of its divisors is an integer number (2867040).

Almost surely, 2^55065585 is an apocalyptic number.

It is an amenable number.

55065585 is a deficient number, since it is larger than the sum of its proper divisors (36679695).

55065585 is a wasteful number, since it uses less digits than its factorization.

55065585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557.

The product of its (nonzero) digits is 150000, while the sum is 39.

The square root of 55065585 is about 7420.6189094980. The cubic root of 55065585 is about 380.4463476297.

The spelling of 55065585 in words is "fifty-five million, sixty-five thousand, five hundred eighty-five".