551885221705 has 8 divisors (see below), whose sum is σ = 663137121672. Its totient is φ = 440924940288.

The previous prime is 551885221691. The next prime is 551885221733. The reversal of 551885221705 is 507122588155.

551885221705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 101075033929 + 450810187776 = 317923^2 + 671424^2 .

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 551885221705 - 2³¹ = 549737738057 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72900472 + ... + 72908041.

It is an arithmetic number, because the mean of its divisors is an integer number (82892140209).

Almost surely, 2^551885221705 is an apocalyptic number.

It is an amenable number.

551885221705 is a deficient number, since it is larger than the sum of its proper divisors (111251899967).

551885221705 is a wasteful number, since it uses less digits than its factorization.

551885221705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145809275.

The product of its (nonzero) digits is 1120000, while the sum is 49.

The spelling of 551885221705 in words is "five hundred fifty-one billion, eight hundred eighty-five million, two hundred twenty-one thousand, seven hundred five".