55854442830 has 64 divisors (see below), whose sum is σ = 138746986560. Its totient is φ = 14373252096.

The previous prime is 55854442817. The next prime is 55854442841. The reversal of 55854442830 is 3824445855.

It is a self number, because there is not a number n which added to its sum of digits gives 55854442830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1717804 + ... + 1750016.

It is an arithmetic number, because the mean of its divisors is an integer number (2167921665).

Almost surely, 2^55854442830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55854442830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69373493280).

55854442830 is an abundant number, since it is smaller than the sum of its proper divisors (82892543730).

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

55854442830 is a wasteful number, since it uses less digits than its factorization.

55854442830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34245.

The product of its (nonzero) digits is 3072000, while the sum is 48.

The spelling of 55854442830 in words is "fifty-five billion, eight hundred fifty-four million, four hundred forty-two thousand, eight hundred thirty".