55111104 has 70 divisors (see below), whose sum is σ = 163381944. Its totient is φ = 18368640.

The previous prime is 55111073. The next prime is 55111139. The reversal of 55111104 is 40111155.

It is a happy number.

55111104 is a `hidden beast` number, since 551 + 1 + 110 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 132 + ... + 10499.

Almost surely, 2^55111104 is an apocalyptic number.

55111104 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55111104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81690972).

55111104 is an abundant number, since it is smaller than the sum of its proper divisors (108270840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55111104 is a wasteful number, since it uses less digits than its factorization.

55111104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10655 (or 10636 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 55111104 is about 7423.6853381592. The cubic root of 55111104 is about 380.5511485245.

Adding to 55111104 its reverse (40111155), we get a palindrome (95222259).

The spelling of 55111104 in words is "fifty-five million, one hundred eleven thousand, one hundred four".