55000500 has 96 divisors (see below), whose sum is σ = 164656128. Its totient is φ = 14256000.

The previous prime is 55000499. The next prime is 55000507. The reversal of 55000500 is 500055.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 55000500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55000507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55005 + ... + 55995.

It is an arithmetic number, because the mean of its divisors is an integer number (1715168).

Almost surely, 2^55000500 is an apocalyptic number.

55000500 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 55000500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82328064).

55000500 is an abundant number, since it is smaller than the sum of its proper divisors (109655628).

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

55000500 is a wasteful number, since it uses less digits than its factorization.

55000500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 15.

The square root of 55000500 is about 7416.2321970122. The cubic root of 55000500 is about 380.2963984825.

Adding to 55000500 its reverse (500055), we get a palindrome (55500555).

The spelling of 55000500 in words is "fifty-five million, five hundred", and thus it is an aban number.