55249385 has 4 divisors (see below), whose sum is σ = 66299268. Its totient is φ = 44199504.

The previous prime is 55249333. The next prime is 55249421. The reversal of 55249385 is 58394255.

55249385 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 29888089 + 25361296 = 5467^2 + 5036^2 .

It is a cyclic number.

It is not a de Polignac number, because 55249385 - 2¹⁴ = 55233001 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, 5524934 + ... + 5524943.

It is an arithmetic number, because the mean of its divisors is an integer number (16574817).

Almost surely, 2^55249385 is an apocalyptic number.

It is an amenable number.

55249385 is a deficient number, since it is larger than the sum of its proper divisors (11049883).

55249385 is a wasteful number, since it uses less digits than its factorization.

55249385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11049882.

The product of its digits is 216000, while the sum is 41.

The square root of 55249385 is about 7432.9930041673. The cubic root of 55249385 is about 380.8691669645.

The spelling of 55249385 in words is "fifty-five million, two hundred forty-nine thousand, three hundred eighty-five".