55239443 has 8 divisors (see below), whose sum is σ = 66844512. Its totient is φ = 44562816.

The previous prime is 55239421. The next prime is 55239451. The reversal of 55239443 is 34493255.

55239443 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 55239443 - 2¹⁰ = 55238419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55239413) 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, 231980 + ... + 232217.

It is an arithmetic number, because the mean of its divisors is an integer number (8355564).

Almost surely, 2^55239443 is an apocalyptic number.

55239443 is a deficient number, since it is larger than the sum of its proper divisors (11605069).

55239443 is a wasteful number, since it uses less digits than its factorization.

55239443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464221.

The product of its digits is 64800, while the sum is 35.

The square root of 55239443 is about 7432.3241990645. The cubic root of 55239443 is about 380.8463200832.

The spelling of 55239443 in words is "fifty-five million, two hundred thirty-nine thousand, four hundred forty-three".