55449785 has 4 divisors (see below), whose sum is σ = 66539748. Its totient is φ = 44359824.

The previous prime is 55449773. The next prime is 55449799. The reversal of 55449785 is 58794455.

It is a happy number.

55449785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35271721 + 20178064 = 5939^2 + 4492^2 .

It is a cyclic number.

It is not a de Polignac number, because 55449785 - 2⁶ = 55449721 is a prime.

It is a Duffinian number.

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 5544974 + ... + 5544983.

It is an arithmetic number, because the mean of its divisors is an integer number (16634937).

Almost surely, 2^55449785 is an apocalyptic number.

It is an amenable number.

55449785 is a deficient number, since it is larger than the sum of its proper divisors (11089963).

55449785 is a wasteful number, since it uses less digits than its factorization.

55449785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11089962.

The product of its digits is 1008000, while the sum is 47.

The square root of 55449785 is about 7446.4612400791. The cubic root of 55449785 is about 381.3291062223.

The spelling of 55449785 in words is "fifty-five million, four hundred forty-nine thousand, seven hundred eighty-five".