55725985 has 12 divisors (see below), whose sum is σ = 77789268. Its totient is φ = 38211936.

The previous prime is 55725961. The next prime is 55725997. The reversal of 55725985 is 58952755.

55725985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 30041361 + 25684624 = 5481^2 + 5068^2 .

It is not a de Polignac number, because 55725985 - 2¹¹ = 55723937 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 11 ways as a sum of consecutive naturals, for example, 113482 + ... + 113971.

It is an arithmetic number, because the mean of its divisors is an integer number (6482439).

Almost surely, 2^55725985 is an apocalyptic number.

It is an amenable number.

55725985 is a deficient number, since it is larger than the sum of its proper divisors (22063283).

55725985 is a wasteful number, since it uses less digits than its factorization.

55725985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227472 (or 227465 counting only the distinct ones).

The product of its digits is 630000, while the sum is 46.

The square root of 55725985 is about 7464.9839249659. The cubic root of 55725985 is about 381.9612018927.

The spelling of 55725985 in words is "fifty-five million, seven hundred twenty-five thousand, nine hundred eighty-five".