53405549 has 2 divisors, whose sum is σ = 53405550. Its totient is φ = 53405548.

The previous prime is 53405537. The next prime is 53405557. The reversal of 53405549 is 94550435.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35402500 + 18003049 = 5950^2 + 4243^2 .

It is a cyclic number.

It is not a de Polignac number, because 53405549 - 2⁴ = 53405533 is a prime.

It is a Chen prime.

It is equal to p_3192875 and since 53405549 and 3192875 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53405509) 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, 26702774 + 26702775.

It is an arithmetic number, because the mean of its divisors is an integer number (26702775).

Almost surely, 2^53405549 is an apocalyptic number.

It is an amenable number.

53405549 is a deficient number, since it is larger than the sum of its proper divisors (1).

53405549 is an equidigital number, since it uses as much as digits as its factorization.

53405549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 53405549 is about 7307.9100295502. The cubic root of 53405549 is about 376.5842287893.

The spelling of 53405549 in words is "fifty-three million, four hundred five thousand, five hundred forty-nine".