54320213 has 2 divisors, whose sum is σ = 54320214. Its totient is φ = 54320212.

The previous prime is 54320207. The next prime is 54320251. The reversal of 54320213 is 31202345.

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., 54272689 + 47524 = 7367^2 + 218^2 .

It is a cyclic number.

It is not a de Polignac number, because 54320213 - 2²² = 50125909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54320293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27160106 + 27160107.

It is an arithmetic number, because the mean of its divisors is an integer number (27160107).

Almost surely, 2^54320213 is an apocalyptic number.

It is an amenable number.

54320213 is a deficient number, since it is larger than the sum of its proper divisors (1).

54320213 is an equidigital number, since it uses as much as digits as its factorization.

54320213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 54320213 is about 7370.2247591237. The cubic root of 54320213 is about 378.7219598959.

Adding to 54320213 its reverse (31202345), we get a palindrome (85522558).

The spelling of 54320213 in words is "fifty-four million, three hundred twenty thousand, two hundred thirteen".