55805785 has 8 divisors (see below), whose sum is σ = 76533696. Its totient is φ = 38266800.

The previous prime is 55805777. The next prime is 55805801. The reversal of 55805785 is 58750855.

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

It is not a de Polignac number, because 55805785 - 2³ = 55805777 is a prime.

It is a super-2 number, since 2×55805785² = 6228571278932450, which contains 22 as substring.

It is a Duffinian number.

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, 797191 + ... + 797260.

It is an arithmetic number, because the mean of its divisors is an integer number (9566712).

Almost surely, 2^55805785 is an apocalyptic number.

It is an amenable number.

55805785 is a deficient number, since it is larger than the sum of its proper divisors (20727911).

55805785 is a wasteful number, since it uses less digits than its factorization.

55805785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594463.

The product of its (nonzero) digits is 280000, while the sum is 43.

The square root of 55805785 is about 7470.3269674091. The cubic root of 55805785 is about 382.1434386359.

The spelling of 55805785 in words is "fifty-five million, eight hundred five thousand, seven hundred eighty-five".