51230530 has 64 divisors (see below), whose sum is σ = 104509440. Its totient is φ = 17950464.

The previous prime is 51230519. The next prime is 51230539. The reversal of 51230530 is 3503215.

51230530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 51230498 and 51230507.

It is not an unprimeable number, because it can be changed into a prime (51230539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 403327 + ... + 403453.

It is an arithmetic number, because the mean of its divisors is an integer number (1632960).

Almost surely, 2^51230530 is an apocalyptic number.

51230530 is an abundant number, since it is smaller than the sum of its proper divisors (53278910).

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

51230530 is a wasteful number, since it uses less digits than its factorization.

51230530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 51230530 is about 7157.5505586758. The cubic root of 51230530 is about 371.4008981214.

Adding to 51230530 its reverse (3503215), we get a palindrome (54733745).

The spelling of 51230530 in words is "fifty-one million, two hundred thirty thousand, five hundred thirty".