55002000 has 160 divisors (see below), whose sum is σ = 181059840. Its totient is φ = 14361600.

The previous prime is 55001981. The next prime is 55002011. The reversal of 55002000 is 20055.

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

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 533949 + ... + 534051.

It is an arithmetic number, because the mean of its divisors is an integer number (1131624).

Almost surely, 2^55002000 is an apocalyptic number.

55002000 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 55002000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90529920).

55002000 is an abundant number, since it is smaller than the sum of its proper divisors (126057840).

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

55002000 is a wasteful number, since it uses less digits than its factorization.

55002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 12.

The square root of 55002000 is about 7416.3333258424. Note that the first 4 decimals coincide. The cubic root of 55002000 is about 380.2998556596.

Adding to 55002000 its reverse (20055), we get a palindrome (55022055).

It can be divided in two parts, 5 and 5002000, that added together give a palindrome (5002005).

The spelling of 55002000 in words is "fifty-five million, two thousand".