51007232 has 18 divisors (see below), whose sum is σ = 101815728. Its totient is φ = 25503488.

The previous prime is 51007207. The next prime is 51007247. The reversal of 51007232 is 23270015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99368 + ... + 99879.

Almost surely, 2^51007232 is an apocalyptic number.

It is an amenable number.

51007232 is a deficient number, since it is larger than the sum of its proper divisors (50808496).

51007232 is an equidigital number, since it uses as much as digits as its factorization.

51007232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199263 (or 199249 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 51007232 is about 7141.9347518722. The cubic root of 51007232 is about 370.8605050943.

Adding to 51007232 its reverse (23270015), we get a palindrome (74277247).

The spelling of 51007232 in words is "fifty-one million, seven thousand, two hundred thirty-two".