55665005 has 16 divisors (see below), whose sum is σ = 74568384. Its totient is φ = 39540480.

The previous prime is 55664981. The next prime is 55665013. The reversal of 55665005 is 50056655.

55665005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-55665005 is a prime.

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, 9404 + ... + 14133.

It is an arithmetic number, because the mean of its divisors is an integer number (4660524).

Almost surely, 2^55665005 is an apocalyptic number.

55665005 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55665005 is a deficient number, since it is larger than the sum of its proper divisors (18903379).

55665005 is a wasteful number, since it uses less digits than its factorization.

55665005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23596.

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

The square root of 55665005 is about 7460.8984043478. The cubic root of 55665005 is about 381.8218264872.

The spelling of 55665005 in words is "fifty-five million, six hundred sixty-five thousand, five".