55042442 has 32 divisors (see below), whose sum is σ = 102208512. Its totient is φ = 21648384.

The previous prime is 55042441. The next prime is 55042483. The reversal of 55042442 is 24424055.

55042442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (55042441) 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 15 ways as a sum of consecutive naturals, for example, 34343 + ... + 35909.

It is an arithmetic number, because the mean of its divisors is an integer number (3194016).

Almost surely, 2^55042442 is an apocalyptic number.

55042442 is a deficient number, since it is larger than the sum of its proper divisors (47166070).

55042442 is a wasteful number, since it uses less digits than its factorization.

55042442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782.

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 55042442 is about 7419.0593743412. The cubic root of 55042442 is about 380.3930420815.

Adding to 55042442 its reverse (24424055), we get a palindrome (79466497).

The spelling of 55042442 in words is "fifty-five million, forty-two thousand, four hundred forty-two".