551943857 has 8 divisors (see below), whose sum is σ = 576616320. Its totient is φ = 527327680.

The previous prime is 551943839. The next prime is 551943859. The reversal of 551943857 is 758349155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 551943857 - 2¹⁴ = 551927473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551943859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6644 + ... + 33882.

It is an arithmetic number, because the mean of its divisors is an integer number (72077040).

Almost surely, 2^551943857 is an apocalyptic number.

It is an amenable number.

551943857 is a deficient number, since it is larger than the sum of its proper divisors (24672463).

551943857 is a wasteful number, since it uses less digits than its factorization.

551943857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28143.

The product of its digits is 756000, while the sum is 47.

The square root of 551943857 is about 23493.4854161744. The cubic root of 551943857 is about 820.2853741019.

The spelling of 551943857 in words is "five hundred fifty-one million, nine hundred forty-three thousand, eight hundred fifty-seven".