55440786 has 8 divisors (see below), whose sum is σ = 110881584. Its totient is φ = 18480260.

The previous prime is 55440773. The next prime is 55440821. The reversal of 55440786 is 68704455.

It is a sphenic number, since it is the product of 3 distinct primes.

55440786 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4620060 + ... + 4620071.

It is an arithmetic number, because the mean of its divisors is an integer number (13860198).

Almost surely, 2^55440786 is an apocalyptic number.

55440786 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55440786 is a wasteful number, since it uses less digits than its factorization.

55440786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9240136.

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 55440786 is about 7445.8569688116. The cubic root of 55440786 is about 381.3084763480.

The spelling of 55440786 in words is "fifty-five million, four hundred forty thousand, seven hundred eighty-six".