55749689 has 8 divisors (see below), whose sum is σ = 57062880. Its totient is φ = 54451936.

The previous prime is 55749679. The next prime is 55749719. The reversal of 55749689 is 98694755.

55749689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 55749689 - 2⁸ = 55749433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55749689.

It is not an unprimeable number, because it can be changed into a prime (55749619) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3614 + ... + 11160.

It is an arithmetic number, because the mean of its divisors is an integer number (7132860).

Almost surely, 2^55749689 is an apocalyptic number.

It is an amenable number.

55749689 is a deficient number, since it is larger than the sum of its proper divisors (1313191).

55749689 is an equidigital number, since it uses as much as digits as its factorization.

55749689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7719.

The product of its digits is 2721600, while the sum is 53.

The square root of 55749689 is about 7466.5714354046. The cubic root of 55749689 is about 382.0153521237.

The spelling of 55749689 in words is "fifty-five million, seven hundred forty-nine thousand, six hundred eighty-nine".