52126321 has 8 divisors (see below), whose sum is σ = 56768040. Its totient is φ = 47574912.

The previous prime is 52126289. The next prime is 52126339. The reversal of 52126321 is 12362125.

52126321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 846400 + 51279921 = 920^2 + 7161^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52126321 - 2⁵ = 52126289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52126292 and 52126301.

It is not an unprimeable number, because it can be changed into a prime (52126381) 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 7 ways as a sum of consecutive naturals, for example, 21370 + ... + 23683.

It is an arithmetic number, because the mean of its divisors is an integer number (7096005).

Almost surely, 2^52126321 is an apocalyptic number.

It is an amenable number.

52126321 is a deficient number, since it is larger than the sum of its proper divisors (4641719).

52126321 is a wasteful number, since it uses less digits than its factorization.

52126321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45155.

The product of its digits is 720, while the sum is 22.

The square root of 52126321 is about 7219.8560234952. The cubic root of 52126321 is about 373.5531113635.

Adding to 52126321 its reverse (12362125), we get a palindrome (64488446).

It can be divided in two parts, 521263 and 21, that added together give a square (521284 = 722²).

The spelling of 52126321 in words is "fifty-two million, one hundred twenty-six thousand, three hundred twenty-one".