51663282 has 16 divisors (see below), whose sum is σ = 112720032. Its totient is φ = 15655520.

The previous prime is 51663281. The next prime is 51663307. The reversal of 51663282 is 28236615.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (51663281) 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, 391323 + ... + 391454.

It is an arithmetic number, because the mean of its divisors is an integer number (7045002).

Almost surely, 2^51663282 is an apocalyptic number.

51663282 is an abundant number, since it is smaller than the sum of its proper divisors (61056750).

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

51663282 is a wasteful number, since it uses less digits than its factorization.

51663282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782793.

The product of its digits is 17280, while the sum is 33.

The square root of 51663282 is about 7187.7174401892. The cubic root of 51663282 is about 372.4437270668.

Adding to 51663282 its reverse (28236615), we get a palindrome (79899897).

It can be divided in two parts, 5166 and 3282, that added together give a palindrome (8448).

The spelling of 51663282 in words is "fifty-one million, six hundred sixty-three thousand, two hundred eighty-two".