55705384 has 32 divisors (see below), whose sum is σ = 120438720. Its totient is φ = 23659776.

The previous prime is 55705373. The next prime is 55705399. The reversal of 55705384 is 48350755.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1927 + ... + 10729.

It is an arithmetic number, because the mean of its divisors is an integer number (3763710).

Almost surely, 2^55705384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55705384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60219360).

55705384 is an abundant number, since it is smaller than the sum of its proper divisors (64733336).

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

55705384 is a wasteful number, since it uses less digits than its factorization.

55705384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8929 (or 8925 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 37.

The square root of 55705384 is about 7463.6039551948. The cubic root of 55705384 is about 381.9141277880.

The spelling of 55705384 in words is "fifty-five million, seven hundred five thousand, three hundred eighty-four".