55045117 has 4 divisors (see below), whose sum is σ = 56325280. Its totient is φ = 53764956.

The previous prime is 55045091. The next prime is 55045121. The reversal of 55045117 is 71154055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55045117 - 2¹¹ = 55043069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55045817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 640017 + ... + 640102.

It is an arithmetic number, because the mean of its divisors is an integer number (14081320).

Almost surely, 2^55045117 is an apocalyptic number.

55045117 is the 4284-th hex number.

It is an amenable number.

55045117 is a deficient number, since it is larger than the sum of its proper divisors (1280163).

55045117 is a wasteful number, since it uses less digits than its factorization.

55045117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280162.

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 55045117 is about 7419.2396510694. The cubic root of 55045117 is about 380.3992042046.

The spelling of 55045117 in words is "fifty-five million, forty-five thousand, one hundred seventeen".