51530322 has 16 divisors (see below), whose sum is σ = 103168512. Its totient is φ = 17158800.

The previous prime is 51530321. The next prime is 51530329. The reversal of 51530322 is 22303515.

It is not an unprimeable number, because it can be changed into a prime (51530321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2572 + ... + 10472.

It is an arithmetic number, because the mean of its divisors is an integer number (6448032).

Almost surely, 2^51530322 is an apocalyptic number.

51530322 is an abundant number, since it is smaller than the sum of its proper divisors (51638190).

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

51530322 is a wasteful number, since it uses less digits than its factorization.

51530322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8993.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 51530322 is about 7178.4623701737. The cubic root of 51530322 is about 372.1239470197.

Adding to 51530322 its reverse (22303515), we get a palindrome (73833837).

The spelling of 51530322 in words is "fifty-one million, five hundred thirty thousand, three hundred twenty-two".