52640322 has 32 divisors (see below), whose sum is σ = 120625152. Its totient is φ = 15002064.

The previous prime is 52640309. The next prime is 52640327. The reversal of 52640322 is 22304625.

It is a junction number, because it is equal to n+sod(n) for n = 52640292 and 52640301.

It is not an unprimeable number, because it can be changed into a prime (52640327) 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 15 ways as a sum of consecutive naturals, for example, 18093 + ... + 20799.

It is an arithmetic number, because the mean of its divisors is an integer number (3769536).

Almost surely, 2^52640322 is an apocalyptic number.

52640322 is an abundant number, since it is smaller than the sum of its proper divisors (67984830).

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

52640322 is a wasteful number, since it uses less digits than its factorization.

52640322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3182.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 52640322 is about 7255.3650493962. The cubic root of 52640322 is about 374.7769268842.

Adding to 52640322 its reverse (22304625), we get a palindrome (74944947).

The spelling of 52640322 in words is "fifty-two million, six hundred forty thousand, three hundred twenty-two".