53323321 has 2 divisors, whose sum is σ = 53323322. Its totient is φ = 53323320.

The previous prime is 53323301. The next prime is 53323381. The reversal of 53323321 is 12332335.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47073321 + 6250000 = 6861^2 + 2500^2 .

It is a cyclic number.

It is not a de Polignac number, because 53323321 - 2⁵ = 53323289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53323292 and 53323301.

It is not a weakly prime, because it can be changed into another prime (53323301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26661660 + 26661661.

It is an arithmetic number, because the mean of its divisors is an integer number (26661661).

Almost surely, 2^53323321 is an apocalyptic number.

It is an amenable number.

53323321 is a deficient number, since it is larger than the sum of its proper divisors (1).

53323321 is an equidigital number, since it uses as much as digits as its factorization.

53323321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 22.

The square root of 53323321 is about 7302.2819036244. The cubic root of 53323321 is about 376.3908551623.

Adding to 53323321 its reverse (12332335), we get a palindrome (65655656).

The spelling of 53323321 in words is "fifty-three million, three hundred twenty-three thousand, three hundred twenty-one".