53219581 has 2 divisors, whose sum is σ = 53219582. Its totient is φ = 53219580.

The previous prime is 53219563. The next prime is 53219603. The reversal of 53219581 is 18591235.

53219581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50893956 + 2325625 = 7134^2 + 1525^2 .

It is a cyclic number.

It is not a de Polignac number, because 53219581 - 2⁵ = 53219549 is a prime.

It is a super-2 number, since 2×53219581² = 5664647603631122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53219501) 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, 26609790 + 26609791.

It is an arithmetic number, because the mean of its divisors is an integer number (26609791).

Almost surely, 2^53219581 is an apocalyptic number.

It is an amenable number.

53219581 is a deficient number, since it is larger than the sum of its proper divisors (1).

53219581 is an equidigital number, since it uses as much as digits as its factorization.

53219581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 34.

The square root of 53219581 is about 7295.1751863817. The cubic root of 53219581 is about 376.1466084568.

The spelling of 53219581 in words is "fifty-three million, two hundred nineteen thousand, five hundred eighty-one".