550056643 has 4 divisors (see below), whose sum is σ = 550559160. Its totient is φ = 549554128.

The previous prime is 550056623. The next prime is 550056649. The reversal of 550056643 is 346650055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346650055 = 5 ⋅69330011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550056643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 550056599 and 550056608.

It is not an unprimeable number, because it can be changed into a prime (550056649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249613 + ... + 251806.

It is an arithmetic number, because the mean of its divisors is an integer number (137639790).

Almost surely, 2^550056643 is an apocalyptic number.

550056643 is a deficient number, since it is larger than the sum of its proper divisors (502517).

550056643 is a wasteful number, since it uses less digits than its factorization.

550056643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502516.

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 550056643 is about 23453.2864008437. The cubic root of 550056643 is about 819.3493961895.

The spelling of 550056643 in words is "five hundred fifty million, fifty-six thousand, six hundred forty-three".