55870782 has 48 divisors (see below), whose sum is σ = 125886096. Its totient is φ = 16508800.

The previous prime is 55870781. The next prime is 55870847. The reversal of 55870782 is 28707855.

It is a happy number.

55870782 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55870781) 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 23 ways as a sum of consecutive naturals, for example, 28828 + ... + 30704.

It is an arithmetic number, because the mean of its divisors is an integer number (2622627).

Almost surely, 2^55870782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55870782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62943048).

55870782 is an abundant number, since it is smaller than the sum of its proper divisors (70015314).

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

55870782 is a wasteful number, since it uses less digits than its factorization.

55870782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945 (or 1934 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 42.

The square root of 55870782 is about 7474.6760464919. The cubic root of 55870782 is about 382.2917419005.

The spelling of 55870782 in words is "fifty-five million, eight hundred seventy thousand, seven hundred eighty-two".