55082820 has 48 divisors (see below), whose sum is σ = 166098240. Its totient is φ = 13558656.

The previous prime is 55082809. The next prime is 55082849. The reversal of 55082820 is 2828055.

55082820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 34530 + ... + 36089.

It is an arithmetic number, because the mean of its divisors is an integer number (3460380).

Almost surely, 2^55082820 is an apocalyptic number.

It is an amenable number.

55082820 is an abundant number, since it is smaller than the sum of its proper divisors (111015420).

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

55082820 is a wasteful number, since it uses less digits than its factorization.

55082820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70644 (or 70642 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 55082820 is about 7421.7801099197. The cubic root of 55082820 is about 380.4860355088.

The spelling of 55082820 in words is "fifty-five million, eighty-two thousand, eight hundred twenty".