55000650 has 48 divisors (see below), whose sum is σ = 138660768. Its totient is φ = 14424000.

The previous prime is 55000643. The next prime is 55000667. The reversal of 55000650 is 5600055.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6145 + ... + 12155.

It is an arithmetic number, because the mean of its divisors is an integer number (2888766).

Almost surely, 2^55000650 is an apocalyptic number.

55000650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55000650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69330384).

55000650 is an abundant number, since it is smaller than the sum of its proper divisors (83660118).

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

55000650 is a wasteful number, since it uses less digits than its factorization.

55000650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6087 (or 6082 counting only the distinct ones).

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

The square root of 55000650 is about 7416.2423099572. The cubic root of 55000650 is about 380.2967442030.

The spelling of 55000650 in words is "fifty-five million, six hundred fifty", and thus it is an aban number.