53281573 has 2 divisors, whose sum is σ = 53281574. Its totient is φ = 53281572.

The previous prime is 53281537. The next prime is 53281583. The reversal of 53281573 is 37518235.

Together with previous prime (53281537) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46485124 + 6796449 = 6818^2 + 2607^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53281573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53281523) 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, 26640786 + 26640787.

It is an arithmetic number, because the mean of its divisors is an integer number (26640787).

Almost surely, 2^53281573 is an apocalyptic number.

It is an amenable number.

53281573 is a deficient number, since it is larger than the sum of its proper divisors (1).

53281573 is an equidigital number, since it uses as much as digits as its factorization.

53281573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 34.

The square root of 53281573 is about 7299.4227853989. The cubic root of 53281573 is about 376.2926012917.

The spelling of 53281573 in words is "fifty-three million, two hundred eighty-one thousand, five hundred seventy-three".