55206030 has 64 divisors (see below), whose sum is σ = 145525248. Its totient is φ = 13292160.

The previous prime is 55206013. The next prime is 55206079. The reversal of 55206030 is 3060255.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55205988 and 55206006.

It is a congruent number.

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, 56607 + ... + 57573.

It is an arithmetic number, because the mean of its divisors is an integer number (2273832).

Almost surely, 2^55206030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55206030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72762624).

55206030 is an abundant number, since it is smaller than the sum of its proper divisors (90319218).

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

55206030 is a wasteful number, since it uses less digits than its factorization.

55206030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 55206030 is about 7430.0760426795. The cubic root of 55206030 is about 380.7695163600.

Adding to 55206030 its reverse (3060255), we get a palindrome (58266285).

The spelling of 55206030 in words is "fifty-five million, two hundred six thousand, thirty".