55000530 has 96 divisors (see below), whose sum is σ = 159410160. Its totient is φ = 13063680.

The previous prime is 55000523. The next prime is 55000549. The reversal of 55000530 is 3500055.

It can be written as a sum of positive squares in 8 ways, for example, as 21372129 + 33628401 = 4623^2 + 5799^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33120 + ... + 34740.

Almost surely, 2^55000530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55000530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79705080).

55000530 is an abundant number, since it is smaller than the sum of its proper divisors (104409630).

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

55000530 is a wasteful number, since it uses less digits than its factorization.

55000530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676 (or 1673 counting only the distinct ones).

The product of its (nonzero) digits is 375, while the sum is 18.

The square root of 55000530 is about 7416.2342196023. The cubic root of 55000530 is about 380.2964676266.

Adding to 55000530 its reverse (3500055), we get a palindrome (58500585).

The spelling of 55000530 in words is "fifty-five million, five hundred thirty", and thus it is an aban number.