53565481 has 2 divisors, whose sum is σ = 53565482. Its totient is φ = 53565480.

The previous prime is 53565467. The next prime is 53565527. The reversal of 53565481 is 18456535.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50537881 + 3027600 = 7109^2 + 1740^2 .

It is a cyclic number.

It is not a de Polignac number, because 53565481 - 2⁷ = 53565353 is a prime.

It is a super-2 number, since 2×53565481² = 5738521509522722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53565481.

It is not a weakly prime, because it can be changed into another prime (53565431) 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, 26782740 + 26782741.

It is an arithmetic number, because the mean of its divisors is an integer number (26782741).

Almost surely, 2^53565481 is an apocalyptic number.

It is an amenable number.

53565481 is a deficient number, since it is larger than the sum of its proper divisors (1).

53565481 is an equidigital number, since it uses as much as digits as its factorization.

53565481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72000, while the sum is 37.

The square root of 53565481 is about 7318.8442393591. The cubic root of 53565481 is about 376.9597693399.

The spelling of 53565481 in words is "fifty-three million, five hundred sixty-five thousand, four hundred eighty-one".