51332224 has 32 divisors (see below), whose sum is σ = 107650800. Its totient is φ = 24314112.

The previous prime is 51332221. The next prime is 51332227. The reversal of 51332224 is 42223315.

It is an interprime number because it is at equal distance from previous prime (51332221) and next prime (51332227).

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 51332195 and 51332204.

It is not an unprimeable number, because it can be changed into a prime (51332221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8122 + ... + 12985.

Almost surely, 2^51332224 is an apocalyptic number.

It is an amenable number.

51332224 is an abundant number, since it is smaller than the sum of its proper divisors (56318576).

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

51332224 is a wasteful number, since it uses less digits than its factorization.

51332224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21140 (or 21128 counting only the distinct ones).

The product of its digits is 1440, while the sum is 22.

The square root of 51332224 is about 7164.6510033637. The cubic root of 51332224 is about 371.6464826681.

Adding to 51332224 its reverse (42223315), we get a palindrome (93555539).

The spelling of 51332224 in words is "fifty-one million, three hundred thirty-two thousand, two hundred twenty-four".