53534205449 has 2 divisors, whose sum is σ = 53534205450. Its totient is φ = 53534205448.

The previous prime is 53534205377. The next prime is 53534205451. The reversal of 53534205449 is 94450243535.

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., 34412847049 + 19121358400 = 185507^2 + 138280^2 .

It is a cyclic number.

It is not a de Polignac number, because 53534205449 - 2¹² = 53534201353 is a prime.

It is a super-2 number, since 2×53534205449² (a number of 22 digits) contains 22 as substring.

Together with 53534205451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53534225449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26767102724 + 26767102725.

It is an arithmetic number, because the mean of its divisors is an integer number (26767102725).

Almost surely, 2^53534205449 is an apocalyptic number.

It is an amenable number.

53534205449 is a deficient number, since it is larger than the sum of its proper divisors (1).

53534205449 is an equidigital number, since it uses as much as digits as its factorization.

53534205449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296000, while the sum is 44.

The spelling of 53534205449 in words is "fifty-three billion, five hundred thirty-four million, two hundred five thousand, four hundred forty-nine".