51783242 has 16 divisors (see below), whose sum is σ = 89093952. Its totient is φ = 22112160.

The previous prime is 51783229. The next prime is 51783247. The reversal of 51783242 is 24238715.

It is a junction number, because it is equal to n+sod(n) for n = 51783199 and 51783208.

It is not an unprimeable number, because it can be changed into a prime (51783247) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2648 + ... + 10515.

It is an arithmetic number, because the mean of its divisors is an integer number (5568372).

Almost surely, 2^51783242 is an apocalyptic number.

51783242 is a deficient number, since it is larger than the sum of its proper divisors (37310710).

51783242 is a wasteful number, since it uses less digits than its factorization.

51783242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13453.

The product of its digits is 13440, while the sum is 32.

The square root of 51783242 is about 7196.0573927672. The cubic root of 51783242 is about 372.7317705404.

It can be divided in two parts, 51783 and 242, that added together give a palindrome (52025).

The spelling of 51783242 in words is "fifty-one million, seven hundred eighty-three thousand, two hundred forty-two".