555420443 has 4 divisors (see below), whose sum is σ = 565900128. Its totient is φ = 544940760.

The previous prime is 555420391. The next prime is 555420451. The reversal of 555420443 is 344024555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 555420443 - 2¹² = 555416347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (555450443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5239763 + ... + 5239868.

It is an arithmetic number, because the mean of its divisors is an integer number (141475032).

Almost surely, 2^555420443 is an apocalyptic number.

555420443 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

555420443 is a deficient number, since it is larger than the sum of its proper divisors (10479685).

555420443 is a wasteful number, since it uses less digits than its factorization.

555420443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10479684.

The product of its (nonzero) digits is 48000, while the sum is 32.

The square root of 555420443 is about 23567.3596951377. The cubic root of 555420443 is about 822.0040427970.

Adding to 555420443 its reverse (344024555), we get a palindrome (899444998).

The spelling of 555420443 in words is "five hundred fifty-five million, four hundred twenty thousand, four hundred forty-three".