55489633 has 4 divisors (see below), whose sum is σ = 58410160. Its totient is φ = 52569108.

The previous prime is 55489627. The next prime is 55489669. The reversal of 55489633 is 33698455.

55489633 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55489633 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 55489633.

It is not an unprimeable number, because it can be changed into a prime (55489613) 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 3 ways as a sum of consecutive naturals, for example, 1460235 + ... + 1460272.

It is an arithmetic number, because the mean of its divisors is an integer number (14602540).

Almost surely, 2^55489633 is an apocalyptic number.

It is an amenable number.

55489633 is a deficient number, since it is larger than the sum of its proper divisors (2920527).

55489633 is a wasteful number, since it uses less digits than its factorization.

55489633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920526.

The product of its digits is 388800, while the sum is 43.

The square root of 55489633 is about 7449.1363928982. The cubic root of 55489633 is about 381.4204294724.

The spelling of 55489633 in words is "fifty-five million, four hundred eighty-nine thousand, six hundred thirty-three".