555505553 has 4 divisors (see below), whose sum is σ = 555552768. Its totient is φ = 555458340.

The previous prime is 555505537. The next prime is 555505571. The reversal of 555505553 is 355505555.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 355505555 = 5 ⋅71101111.

It is a cyclic number.

It is not a de Polignac number, because 555505553 - 2⁴ = 555505537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (555501553) 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, 9800 + ... + 34742.

It is an arithmetic number, because the mean of its divisors is an integer number (138888192).

Almost surely, 2^555505553 is an apocalyptic number.

It is an amenable number.

555505553 is a deficient number, since it is larger than the sum of its proper divisors (47215).

555505553 is a wasteful number, since it uses less digits than its factorization.

555505553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47214.

The product of its (nonzero) digits is 234375, while the sum is 38.

The square root of 555505553 is about 23569.1653012999. The cubic root of 555505553 is about 822.0460273223.

The spelling of 555505553 in words is "five hundred fifty-five million, five hundred five thousand, five hundred fifty-three".