51233142 has 16 divisors (see below), whose sum is σ = 105772032. Its totient is φ = 16526760.

The previous prime is 51233129. The next prime is 51233153. The reversal of 51233142 is 24133215.

51233142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 137538 + ... + 137909.

It is an arithmetic number, because the mean of its divisors is an integer number (6610752).

Almost surely, 2^51233142 is an apocalyptic number.

51233142 is an abundant number, since it is smaller than the sum of its proper divisors (54538890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51233142 is a wasteful number, since it uses less digits than its factorization.

51233142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275483.

The product of its digits is 720, while the sum is 21.

The square root of 51233142 is about 7157.7330210060. The cubic root of 51233142 is about 371.4072100000.

Adding to 51233142 its reverse (24133215), we get a palindrome (75366357).

The spelling of 51233142 in words is "fifty-one million, two hundred thirty-three thousand, one hundred forty-two".