550511505 has 16 divisors (see below), whose sum is σ = 978687360. Its totient is φ = 293606064.

The previous prime is 550511503. The next prime is 550511531. The reversal of 550511505 is 505115055.

550511505 is a `hidden beast` number, since 5 + 505 + 1 + 150 + 5 = 666.

It is not a de Polignac number, because 550511505 - 2¹ = 550511503 is a prime.

It is a super-3 number, since 3×550511505³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (550511501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2038797 + ... + 2039066.

It is an arithmetic number, because the mean of its divisors is an integer number (61167960).

Almost surely, 2^550511505 is an apocalyptic number.

It is an amenable number.

550511505 is a deficient number, since it is larger than the sum of its proper divisors (428175855).

550511505 is a wasteful number, since it uses less digits than its factorization.

550511505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4077877 (or 4077871 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 27.

The square root of 550511505 is about 23462.9815880250. The cubic root of 550511505 is about 819.5751839797.

The spelling of 550511505 in words is "five hundred fifty million, five hundred eleven thousand, five hundred five".