55065000 has 80 divisors (see below), whose sum is σ = 172069920. Its totient is φ = 14680000.

The previous prime is 55064993. The next prime is 55065001. The reversal of 55065000 is 56055.

It is not an unprimeable number, because it can be changed into a prime (55065001) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 13165 + ... + 16835.

It is an arithmetic number, because the mean of its divisors is an integer number (2150874).

Almost surely, 2^55065000 is an apocalyptic number.

55065000 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 55065000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86034960).

55065000 is an abundant number, since it is smaller than the sum of its proper divisors (117004920).

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

55065000 is a wasteful number, since it uses less digits than its factorization.

55065000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3700 (or 3681 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 55065000 is about 7420.5794921960. The cubic root of 55065000 is about 380.4450003763.

The spelling of 55065000 in words is "fifty-five million, sixty-five thousand".