51263142 has 32 divisors (see below), whose sum is σ = 118390272. Its totient is φ = 14494464.

The previous prime is 51263129. The next prime is 51263189. The reversal of 51263142 is 24136215.

51263142 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 15 ways as a sum of consecutive naturals, for example, 2218 + ... + 10365.

It is an arithmetic number, because the mean of its divisors is an integer number (3699696).

Almost surely, 2^51263142 is an apocalyptic number.

51263142 is an abundant number, since it is smaller than the sum of its proper divisors (67127130).

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

51263142 is a wasteful number, since it uses less digits than its factorization.

51263142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12692.

The product of its digits is 1440, while the sum is 24.

The square root of 51263142 is about 7159.8283498978. The cubic root of 51263142 is about 371.4796894002.

Adding to 51263142 its reverse (24136215), we get a palindrome (75399357).

The spelling of 51263142 in words is "fifty-one million, two hundred sixty-three thousand, one hundred forty-two".