55475785 has 8 divisors (see below), whose sum is σ = 66623616. Its totient is φ = 44345520.

The previous prime is 55475773. The next prime is 55475803. The reversal of 55475785 is 58757455.

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

It is a de Polignac number, because none of the positive numbers 2^k-55475785 is a prime.

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, 4032 + ... + 11278.

It is an arithmetic number, because the mean of its divisors is an integer number (8327952).

Almost surely, 2^55475785 is an apocalyptic number.

It is an amenable number.

55475785 is a deficient number, since it is larger than the sum of its proper divisors (11147831).

55475785 is a wasteful number, since it uses less digits than its factorization.

55475785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8783.

The product of its digits is 980000, while the sum is 46.

The square root of 55475785 is about 7448.2068311776. The cubic root of 55475785 is about 381.3886977220.

The spelling of 55475785 in words is "fifty-five million, four hundred seventy-five thousand, seven hundred eighty-five".