55066605 has 16 divisors (see below), whose sum is σ = 96116544. Its totient is φ = 26698880.

The previous prime is 55066603. The next prime is 55066607. The reversal of 55066605 is 50666055.

It is an interprime number because it is at equal distance from previous prime (55066603) and next prime (55066607).

It is not a de Polignac number, because 55066605 - 2¹ = 55066603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55066603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166704 + ... + 167033.

It is an arithmetic number, because the mean of its divisors is an integer number (6007284).

Almost surely, 2^55066605 is an apocalyptic number.

55066605 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55066605 is a deficient number, since it is larger than the sum of its proper divisors (41049939).

55066605 is a wasteful number, since it uses less digits than its factorization.

55066605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333756.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 55066605 is about 7420.6876366008. The cubic root of 55066605 is about 380.4486966642.

The spelling of 55066605 in words is "fifty-five million, sixty-six thousand, six hundred five".