55748689 has 4 divisors (see below), whose sum is σ = 55809124. Its totient is φ = 55688256.

The previous prime is 55748681. The next prime is 55748699. The reversal of 55748689 is 98684755.

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 15210000 + 40538689 = 3900^2 + 6367^2 .

It is a cyclic number.

It is not a de Polignac number, because 55748689 - 2³ = 55748681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55748681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28812 + ... + 30685.

It is an arithmetic number, because the mean of its divisors is an integer number (13952281).

Almost surely, 2^55748689 is an apocalyptic number.

It is an amenable number.

55748689 is a deficient number, since it is larger than the sum of its proper divisors (60435).

55748689 is an equidigital number, since it uses as much as digits as its factorization.

55748689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60434.

The product of its digits is 2419200, while the sum is 52.

The square root of 55748689 is about 7466.5044699645. The cubic root of 55748689 is about 382.0130679995.

The spelling of 55748689 in words is "fifty-five million, seven hundred forty-eight thousand, six hundred eighty-nine".