55251142 has 8 divisors (see below), whose sum is σ = 82967976. Its totient is φ = 27595152.

The previous prime is 55251121. The next prime is 55251151. The reversal of 55251142 is 24115255.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12868 + ... + 16615.

It is an arithmetic number, because the mean of its divisors is an integer number (10370997).

Almost surely, 2^55251142 is an apocalyptic number.

55251142 is a deficient number, since it is larger than the sum of its proper divisors (27716834).

55251142 is a wasteful number, since it uses less digits than its factorization.

55251142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30422.

The product of its digits is 2000, while the sum is 25.

The square root of 55251142 is about 7433.1111924954. Note that the first 4 decimals coincide. The cubic root of 55251142 is about 380.8732042947.

Adding to 55251142 its reverse (24115255), we get a palindrome (79366397).

The spelling of 55251142 in words is "fifty-five million, two hundred fifty-one thousand, one hundred forty-two".