51302330 has 16 divisors (see below), whose sum is σ = 93297960. Its totient is φ = 20308992.

The previous prime is 51302323. The next prime is 51302341. The reversal of 51302330 is 3320315.

It can be written as a sum of positive squares in 4 ways, for example, as 43811161 + 7491169 = 6619^2 + 2737^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51302299 and 51302308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25475 + ... + 27414.

Almost surely, 2^51302330 is an apocalyptic number.

51302330 is a deficient number, since it is larger than the sum of its proper divisors (41995630).

51302330 is a wasteful number, since it uses less digits than its factorization.

51302330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52993.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 51302330 is about 7162.5644848755. The cubic root of 51302330 is about 371.5743242429.

Adding to 51302330 its reverse (3320315), we get a palindrome (54622645).

The spelling of 51302330 in words is "fifty-one million, three hundred two thousand, three hundred thirty".