51563232 has 72 divisors (see below), whose sum is σ = 167587056. Its totient is φ = 14731776.

The previous prime is 51563201. The next prime is 51563249. The reversal of 51563232 is 23236515.

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 51563196 and 51563205.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 10773 + ... + 14804.

It is an arithmetic number, because the mean of its divisors is an integer number (2327598).

Almost surely, 2^51563232 is an apocalyptic number.

It is an amenable number.

51563232 is an abundant number, since it is smaller than the sum of its proper divisors (116023824).

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

51563232 is a wasteful number, since it uses less digits than its factorization.

51563232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25600 (or 25589 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 51563232 is about 7180.7542779293. The cubic root of 51563232 is about 372.2031495322.

Adding to 51563232 its reverse (23236515), we get a palindrome (74799747).

The spelling of 51563232 in words is "fifty-one million, five hundred sixty-three thousand, two hundred thirty-two".