51130032 has 20 divisors (see below), whose sum is σ = 132086040. Its totient is φ = 17043328.

The previous prime is 51130021. The next prime is 51130039. The reversal of 51130032 is 23003115.

It is a happy number.

It is a super-2 number, since 2×51130032² = 5228560344642048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51129993 and 51130020.

It is not an unprimeable number, because it can be changed into a prime (51130039) 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 3 ways as a sum of consecutive naturals, for example, 532557 + ... + 532652.

It is an arithmetic number, because the mean of its divisors is an integer number (6604302).

Almost surely, 2^51130032 is an apocalyptic number.

It is an amenable number.

51130032 is an abundant number, since it is smaller than the sum of its proper divisors (80956008).

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

51130032 is a wasteful number, since it uses less digits than its factorization.

51130032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065220 (or 1065214 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 51130032 is about 7150.5266938877. The cubic root of 51130032 is about 371.1578823473.

Adding to 51130032 its reverse (23003115), we get a palindrome (74133147).

The spelling of 51130032 in words is "fifty-one million, one hundred thirty thousand, thirty-two".