55055565 has 32 divisors (see below), whose sum is σ = 99970560. Its totient is φ = 28734912.

The previous prime is 55055479. The next prime is 55055569. The reversal of 55055565 is 56555055.

55055565 is a `hidden beast` number, since 550 + 55 + 56 + 5 = 666.

It is not a de Polignac number, because 55055565 - 2¹⁰ = 55054541 is a prime.

It is a super-2 number, since 2×55055565² = 6062230474938450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55055569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2007 + ... + 10683.

It is an arithmetic number, because the mean of its divisors is an integer number (3124080).

Almost surely, 2^55055565 is an apocalyptic number.

It is an amenable number.

55055565 is a deficient number, since it is larger than the sum of its proper divisors (44914995).

55055565 is a wasteful number, since it uses less digits than its factorization.

55055565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8738 (or 8732 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 36.

The square root of 55055565 is about 7419.9437329403. The cubic root of 55055565 is about 380.4232702778.

The spelling of 55055565 in words is "fifty-five million, fifty-five thousand, five hundred sixty-five".