55021342 has 8 divisors (see below), whose sum is σ = 85194432. Its totient is φ = 26623200.

The previous prime is 55021297. The next prime is 55021357. The reversal of 55021342 is 24312055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443659 + ... + 443782.

It is an arithmetic number, because the mean of its divisors is an integer number (10649304).

Almost surely, 2^55021342 is an apocalyptic number.

55021342 is a deficient number, since it is larger than the sum of its proper divisors (30173090).

55021342 is a wasteful number, since it uses less digits than its factorization.

55021342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887474.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 55021342 is about 7417.6372248850. The cubic root of 55021342 is about 380.3444291765.

Adding to 55021342 its reverse (24312055), we get a palindrome (79333397).

The spelling of 55021342 in words is "fifty-five million, twenty-one thousand, three hundred forty-two".