53220553 has 2 divisors, whose sum is σ = 53220554. Its totient is φ = 53220552.

The previous prime is 53220499. The next prime is 53220581. The reversal of 53220553 is 35502235.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45805824 + 7414729 = 6768^2 + 2723^2 .

It is a cyclic number.

It is not a de Polignac number, because 53220553 - 2¹⁷ = 53089481 is a prime.

It is not a weakly prime, because it can be changed into another prime (53220593) 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 as a sum of consecutive naturals, namely, 26610276 + 26610277.

It is an arithmetic number, because the mean of its divisors is an integer number (26610277).

Almost surely, 2^53220553 is an apocalyptic number.

It is an amenable number.

53220553 is a deficient number, since it is larger than the sum of its proper divisors (1).

53220553 is an equidigital number, since it uses as much as digits as its factorization.

53220553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 53220553 is about 7295.2418054510. The cubic root of 53220553 is about 376.1488984177.

Adding to 53220553 its reverse (35502235), we get a palindrome (88722788).

The spelling of 53220553 in words is "fifty-three million, two hundred twenty thousand, five hundred fifty-three".