55111005 has 24 divisors (see below), whose sum is σ = 95785560. Its totient is φ = 29312640.

The previous prime is 55111003. The next prime is 55111009. The reversal of 55111005 is 50011155.

55111005 is a `hidden beast` number, since 551 + 110 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1572516 + 53538489 = 1254^2 + 7317^2 .

It is not a de Polignac number, because 55111005 - 2¹ = 55111003 is a prime.

It is a super-2 number, since 2×55111005² = 6074445744220050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55111003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17491 + ... + 20399.

It is an arithmetic number, because the mean of its divisors is an integer number (3991065).

Almost surely, 2^55111005 is an apocalyptic number.

It is an amenable number.

55111005 is a deficient number, since it is larger than the sum of its proper divisors (40674555).

55111005 is a wasteful number, since it uses less digits than its factorization.

55111005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3341 (or 3338 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

The square root of 55111005 is about 7423.6786703089. The cubic root of 55111005 is about 380.5509206540.

The spelling of 55111005 in words is "fifty-five million, one hundred eleven thousand, five".