53728883381 has 2 divisors, whose sum is σ = 53728883382. Its totient is φ = 53728883380.

The previous prime is 53728883303. The next prime is 53728883389. The reversal of 53728883381 is 18338882735.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45810553156 + 7918330225 = 214034^2 + 88985^2 .

It is a cyclic number.

It is not a de Polignac number, because 53728883381 - 2¹⁸ = 53728621237 is a prime.

It is a super-2 number, since 2×53728883381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53728883389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26864441690 + 26864441691.

It is an arithmetic number, because the mean of its divisors is an integer number (26864441691).

Almost surely, 2^53728883381 is an apocalyptic number.

It is an amenable number.

53728883381 is a deficient number, since it is larger than the sum of its proper divisors (1).

53728883381 is an equidigital number, since it uses as much as digits as its factorization.

53728883381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7741440, while the sum is 56.

The spelling of 53728883381 in words is "fifty-three billion, seven hundred twenty-eight million, eight hundred eighty-three thousand, three hundred eighty-one".