55066505 has 32 divisors (see below), whose sum is σ = 74511360. Its totient is φ = 38787840.

The previous prime is 55066499. The next prime is 55066507. The reversal of 55066505 is 50566055.

55066505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55066505 - 2⁴ = 55066489 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (55066507) 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 31 ways as a sum of consecutive naturals, for example, 246824 + ... + 247046.

It is an arithmetic number, because the mean of its divisors is an integer number (2328480).

Almost surely, 2^55066505 is an apocalyptic number.

It is an amenable number.

55066505 is a deficient number, since it is larger than the sum of its proper divisors (19444855).

55066505 is a wasteful number, since it uses less digits than its factorization.

55066505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401.

The product of its (nonzero) digits is 22500, while the sum is 32.

The square root of 55066505 is about 7420.6808986777. The cubic root of 55066505 is about 380.4484663680.

The spelling of 55066505 in words is "fifty-five million, sixty-six thousand, five hundred five".