55747385 has 4 divisors (see below), whose sum is σ = 66896868. Its totient is φ = 44597904.

The previous prime is 55747379. The next prime is 55747427. The reversal of 55747385 is 58374755.

It is a happy number.

55747385 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 26759929 + 28987456 = 5173^2 + 5384^2 .

It is a cyclic number.

It is not a de Polignac number, because 55747385 - 2²² = 51553081 is a prime.

It is a Duffinian 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, 5574734 + ... + 5574743.

It is an arithmetic number, because the mean of its divisors is an integer number (16724217).

Almost surely, 2^55747385 is an apocalyptic number.

It is an amenable number.

55747385 is a deficient number, since it is larger than the sum of its proper divisors (11149483).

55747385 is a wasteful number, since it uses less digits than its factorization.

55747385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11149482.

The product of its digits is 588000, while the sum is 44.

The square root of 55747385 is about 7466.4171461284. The cubic root of 55747385 is about 382.0100894606.

The spelling of 55747385 in words is "fifty-five million, seven hundred forty-seven thousand, three hundred eighty-five".