55665111 has 8 divisors (see below), whose sum is σ = 74257264. Its totient is φ = 37091520.

The previous prime is 55665109. The next prime is 55665163. The reversal of 55665111 is 11156655.

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

It is not a de Polignac number, because 55665111 - 2¹ = 55665109 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 (55645111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5571 + ... + 11931.

It is an arithmetic number, because the mean of its divisors is an integer number (9282158).

Almost surely, 2^55665111 is an apocalyptic number.

55665111 is a deficient number, since it is larger than the sum of its proper divisors (18592153).

55665111 is a wasteful number, since it uses less digits than its factorization.

55665111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9281.

The product of its digits is 4500, while the sum is 30.

The square root of 55665111 is about 7460.9055080466. The cubic root of 55665111 is about 381.8220688483.

The spelling of 55665111 in words is "fifty-five million, six hundred sixty-five thousand, one hundred eleven".