551242005 has 16 divisors (see below), whose sum is σ = 912401280. Its totient is φ = 283857728.

The previous prime is 551241997. The next prime is 551242019. The reversal of 551242005 is 500242155.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 551242005 - 2³ = 551241997 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 633177 + ... + 634046.

It is an arithmetic number, because the mean of its divisors is an integer number (57025080).

Almost surely, 2^551242005 is an apocalyptic number.

It is an amenable number.

551242005 is a deficient number, since it is larger than the sum of its proper divisors (361159275).

551242005 is a wasteful number, since it uses less digits than its factorization.

551242005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267260.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 551242005 is about 23478.5435025259. The cubic root of 551242005 is about 819.9375349007.

It can be divided in two parts, 551 and 242005, that added together give a triangular number (242556 = T₆₉₆).

The spelling of 551242005 in words is "five hundred fifty-one million, two hundred forty-two thousand, five".