551530487 has 2 divisors, whose sum is σ = 551530488. Its totient is φ = 551530486.

The previous prime is 551530453. The next prime is 551530531. The reversal of 551530487 is 784035155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551530487 - 2¹⁸ = 551268343 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551530487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551530417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275765243 + 275765244.

It is an arithmetic number, because the mean of its divisors is an integer number (275765244).

Almost surely, 2^551530487 is an apocalyptic number.

551530487 is a deficient number, since it is larger than the sum of its proper divisors (1).

551530487 is an equidigital number, since it uses as much as digits as its factorization.

551530487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84000, while the sum is 38.

The square root of 551530487 is about 23484.6862231540. The cubic root of 551530487 is about 820.0805428520.

The spelling of 551530487 in words is "five hundred fifty-one million, five hundred thirty thousand, four hundred eighty-seven".