55004445542 has 64 divisors (see below), whose sum is σ = 90797760000. Its totient is φ = 24904661760.

The previous prime is 55004445473. The next prime is 55004445547. The reversal of 55004445542 is 24554440055.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 55004445496 and 55004445505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55004445547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12169559 + ... + 12174077.

It is an arithmetic number, because the mean of its divisors is an integer number (1418715000).

Almost surely, 2^55004445542 is an apocalyptic number.

55004445542 is a deficient number, since it is larger than the sum of its proper divisors (35793314458).

55004445542 is a wasteful number, since it uses less digits than its factorization.

55004445542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4749.

The product of its (nonzero) digits is 320000, while the sum is 38.

Adding to 55004445542 its reverse (24554440055), we get a palindrome (79558885597).

The spelling of 55004445542 in words is "fifty-five billion, four million, four hundred forty-five thousand, five hundred forty-two".