53722213 has 2 divisors, whose sum is σ = 53722214. Its totient is φ = 53722212.

The previous prime is 53722199. The next prime is 53722217. The reversal of 53722213 is 31222735.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42419169 + 11303044 = 6513^2 + 3362^2 .

It is a cyclic number.

It is not a de Polignac number, because 53722213 - 2²¹ = 51625061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53722217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26861106 + 26861107.

It is an arithmetic number, because the mean of its divisors is an integer number (26861107).

Almost surely, 2^53722213 is an apocalyptic number.

It is an amenable number.

53722213 is a deficient number, since it is larger than the sum of its proper divisors (1).

53722213 is an equidigital number, since it uses as much as digits as its factorization.

53722213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 25.

The square root of 53722213 is about 7329.5438466524. The cubic root of 53722213 is about 377.3270713589.

Adding to 53722213 its reverse (31222735), we get a palindrome (84944948).

It can be divided in two parts, 53722 and 213, that added together give a palindrome (53935).

The spelling of 53722213 in words is "fifty-three million, seven hundred twenty-two thousand, two hundred thirteen".