55820839230 has 128 divisors (see below), whose sum is σ = 167276067840. Its totient is φ = 13143081600.

The previous prime is 55820839201. The next prime is 55820839237. The reversal of 55820839230 is 3293802855.

55820839230 is a `hidden beast` number, since 5 + 58 + 208 + 392 + 3 + 0 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55820839237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 264996 + ... + 426455.

It is an arithmetic number, because the mean of its divisors is an integer number (1306844280).

Almost surely, 2^55820839230 is an apocalyptic number.

55820839230 is an abundant number, since it is smaller than the sum of its proper divisors (111455228610).

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

55820839230 is a wasteful number, since it uses less digits than its factorization.

55820839230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691503 (or 691497 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 55820839230 in words is "fifty-five billion, eight hundred twenty million, eight hundred thirty-nine thousand, two hundred thirty".