51304330 has 32 divisors (see below), whose sum is σ = 115136640. Its totient is φ = 15990720.

The previous prime is 51304291. The next prime is 51304333. The reversal of 51304330 is 3340315.

It is a junction number, because it is equal to n+sod(n) for n = 51304298 and 51304307.

It is not an unprimeable number, because it can be changed into a prime (51304333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32545 + ... + 34084.

It is an arithmetic number, because the mean of its divisors is an integer number (3598020).

Almost surely, 2^51304330 is an apocalyptic number.

51304330 is an abundant number, since it is smaller than the sum of its proper divisors (63832310).

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

51304330 is a wasteful number, since it uses less digits than its factorization.

51304330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66654.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 51304330 is about 7162.7040983137. The cubic root of 51304330 is about 371.5791527370.

Adding to 51304330 its reverse (3340315), we get a palindrome (54644645).

The spelling of 51304330 in words is "fifty-one million, three hundred four thousand, three hundred thirty".