53319881 has 2 divisors, whose sum is σ = 53319882. Its totient is φ = 53319880.

The previous prime is 53319853. The next prime is 53319887. The reversal of 53319881 is 18891335.

53319881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37319881 + 16000000 = 6109^2 + 4000^2 .

It is a cyclic number.

It is not a de Polignac number, because 53319881 - 2⁶ = 53319817 is a prime.

It is a super-2 number, since 2×53319881² = 5686019419708322, which contains 22 as substring.

It is a Chen prime.

It is equal to p_3188099 and since 53319881 and 3188099 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (53319887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26659940 + 26659941.

It is an arithmetic number, because the mean of its divisors is an integer number (26659941).

Almost surely, 2^53319881 is an apocalyptic number.

It is an amenable number.

53319881 is a deficient number, since it is larger than the sum of its proper divisors (1).

53319881 is an equidigital number, since it uses as much as digits as its factorization.

53319881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 38.

The square root of 53319881 is about 7302.0463570153. The cubic root of 53319881 is about 376.3827610653.

The spelling of 53319881 in words is "fifty-three million, three hundred nineteen thousand, eight hundred eighty-one".