551506216 has 16 divisors (see below), whose sum is σ = 1041016500. Its totient is φ = 273901824.

The previous prime is 551506183. The next prime is 551506223. The reversal of 551506216 is 612605155.

It can be written as a sum of positive squares in 2 ways, for example, as 550090116 + 1416100 = 23454^2 + 1190^2 .

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 3 ways as a sum of consecutive naturals, for example, 230145 + ... + 232528.

Almost surely, 2^551506216 is an apocalyptic number.

It is an amenable number.

551506216 is a deficient number, since it is larger than the sum of its proper divisors (489510284).

551506216 is a wasteful number, since it uses less digits than its factorization.

551506216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462828 (or 462824 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 551506216 is about 23484.1694764793. The cubic root of 551506216 is about 820.0685130143.

The spelling of 551506216 in words is "five hundred fifty-one million, five hundred six thousand, two hundred sixteen".