55110000 has 200 divisors, whose sum is σ = 195237504. Its totient is φ = 13280000.

The previous prime is 55109993. The next prime is 55110037. The reversal of 55110000 is 1155.

It is a tau number, because it is divible by the number of its divisors (200).

It is a super-2 number, since 2×55110000² = 6074224200000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 329917 + ... + 330083.

Almost surely, 2^55110000 is an apocalyptic number.

55110000 is a gapful number since it is divisible by the number (50) 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 55110000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97618752).

55110000 is an abundant number, since it is smaller than the sum of its proper divisors (140127504).

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

55110000 is a wasteful number, since it uses less digits than its factorization.

55110000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 12.

The square root of 55110000 is about 7423.6109811870. The cubic root of 55110000 is about 380.5486074076.

Adding to 55110000 its reverse (1155), we get a palindrome (55111155).

The spelling of 55110000 in words is "fifty-five million, one hundred ten thousand".