53043481 has 2 divisors, whose sum is σ = 53043482. Its totient is φ = 53043480.

The previous prime is 53043457. The next prime is 53043493. The reversal of 53043481 is 18434035.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43771456 + 9272025 = 6616^2 + 3045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53043481 is a prime.

It is a super-2 number, since 2×53043481² = 5627221753194722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53049481) 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, 26521740 + 26521741.

It is an arithmetic number, because the mean of its divisors is an integer number (26521741).

Almost surely, 2^53043481 is an apocalyptic number.

It is an amenable number.

53043481 is a deficient number, since it is larger than the sum of its proper divisors (1).

53043481 is an equidigital number, since it uses as much as digits as its factorization.

53043481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 53043481 is about 7283.0955643874. The cubic root of 53043481 is about 375.7312687661.

The spelling of 53043481 in words is "fifty-three million, forty-three thousand, four hundred eighty-one".