51223142 has 8 divisors (see below), whose sum is σ = 81354456. Its totient is φ = 24104992.

The previous prime is 51223127. The next prime is 51223189. The reversal of 51223142 is 24132215.

51223142 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 congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 753248 + ... + 753315.

It is an arithmetic number, because the mean of its divisors is an integer number (10169307).

Almost surely, 2^51223142 is an apocalyptic number.

51223142 is a deficient number, since it is larger than the sum of its proper divisors (30131314).

51223142 is a wasteful number, since it uses less digits than its factorization.

51223142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506582.

The product of its digits is 480, while the sum is 20.

The square root of 51223142 is about 7157.0344417224. The cubic root of 51223142 is about 371.3830439125.

Adding to 51223142 its reverse (24132215), we get a palindrome (75355357).

The spelling of 51223142 in words is "fifty-one million, two hundred twenty-three thousand, one hundred forty-two".