55111718 has 8 divisors (see below), whose sum is σ = 82929312. Its totient is φ = 27468616.

The previous prime is 55111717. The next prime is 55111733. The reversal of 55111718 is 81711155.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55111711) 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 3 ways as a sum of consecutive naturals, for example, 42830 + ... + 44097.

It is an arithmetic number, because the mean of its divisors is an integer number (10366164).

Almost surely, 2^55111718 is an apocalyptic number.

55111718 is a deficient number, since it is larger than the sum of its proper divisors (27817594).

55111718 is a wasteful number, since it uses less digits than its factorization.

55111718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87246.

The product of its digits is 1400, while the sum is 29.

The square root of 55111718 is about 7423.7266921675. The cubic root of 55111718 is about 380.5525617759.

The spelling of 55111718 in words is "fifty-five million, one hundred eleven thousand, seven hundred eighteen".