55086330 has 64 divisors (see below), whose sum is σ = 143555328. Its totient is φ = 13447680.

The previous prime is 55086319. The next prime is 55086331. The reversal of 55086330 is 3368055.

55086330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (55086331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52915 + ... + 53945.

It is an arithmetic number, because the mean of its divisors is an integer number (2243052).

Almost surely, 2^55086330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55086330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71777664).

55086330 is an abundant number, since it is smaller than the sum of its proper divisors (88468998).

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

55086330 is a wasteful number, since it uses less digits than its factorization.

55086330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 55086330 is about 7422.0165723340. The cubic root of 55086330 is about 380.4941171430.

The spelling of 55086330 in words is "fifty-five million, eighty-six thousand, three hundred thirty".