55117417 has 16 divisors (see below), whose sum is σ = 60279552. Its totient is φ = 50195200.

The previous prime is 55117397. The next prime is 55117441. The reversal of 55117417 is 71471155.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 55117417 - 2¹⁹ = 54593129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55117477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80358 + ... + 81040.

It is an arithmetic number, because the mean of its divisors is an integer number (3767472).

Almost surely, 2^55117417 is an apocalyptic number.

It is an amenable number.

55117417 is a deficient number, since it is larger than the sum of its proper divisors (5162135).

55117417 is a wasteful number, since it uses less digits than its factorization.

55117417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848.

The product of its digits is 4900, while the sum is 31.

The square root of 55117417 is about 7424.1105191127. The cubic root of 55117417 is about 380.5656787341.

The spelling of 55117417 in words is "fifty-five million, one hundred seventeen thousand, four hundred seventeen".