55829780 has 24 divisors (see below), whose sum is σ = 117424608. Its totient is φ = 22297248.

The previous prime is 55829777. The next prime is 55829801. The reversal of 55829780 is 8792855.

55829780 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 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 7 ways as a sum of consecutive naturals, for example, 13967 + ... + 17513.

It is an arithmetic number, because the mean of its divisors is an integer number (4892692).

Almost surely, 2^55829780 is an apocalyptic number.

It is an amenable number.

55829780 is an abundant number, since it is smaller than the sum of its proper divisors (61594828).

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

55829780 is a wasteful number, since it uses less digits than its factorization.

55829780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4343 (or 4341 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 44.

The square root of 55829780 is about 7471.9328155438. The cubic root of 55829780 is about 382.1982012852.

The spelling of 55829780 in words is "fifty-five million, eight hundred twenty-nine thousand, seven hundred eighty".