550006511 has 4 divisors (see below), whose sum is σ = 552198024. Its totient is φ = 547815000.

The previous prime is 550006463. The next prime is 550006529. The reversal of 550006511 is 115600055.

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 550006511 - 2⁶ = 550006447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550006571) 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, 1095380 + ... + 1095881.

It is an arithmetic number, because the mean of its divisors is an integer number (138049506).

Almost surely, 2^550006511 is an apocalyptic number.

550006511 is a deficient number, since it is larger than the sum of its proper divisors (2191513).

550006511 is a wasteful number, since it uses less digits than its factorization.

550006511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191512.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 550006511 is about 23452.2176136927. The cubic root of 550006511 is about 819.3245036793.

Adding to 550006511 its reverse (115600055), we get a palindrome (665606566).

The spelling of 550006511 in words is "five hundred fifty million, six thousand, five hundred eleven".