53549443 has 2 divisors, whose sum is σ = 53549444. Its totient is φ = 53549442.

The previous prime is 53549413. The next prime is 53549449. The reversal of 53549443 is 34494535.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53549443 is a prime.

It is a super-2 number, since 2×53549443² = 5735085691220498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53549449) 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, 26774721 + 26774722.

It is an arithmetic number, because the mean of its divisors is an integer number (26774722).

Almost surely, 2^53549443 is an apocalyptic number.

53549443 is a deficient number, since it is larger than the sum of its proper divisors (1).

53549443 is an equidigital number, since it uses as much as digits as its factorization.

53549443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 37.

The square root of 53549443 is about 7317.7484925351. The cubic root of 53549443 is about 376.9221438384.

The spelling of 53549443 in words is "fifty-three million, five hundred forty-nine thousand, four hundred forty-three".