551434505 has 4 divisors (see below), whose sum is σ = 661721412. Its totient is φ = 441147600.

The previous prime is 551434489. The next prime is 551434523. The reversal of 551434505 is 505434155.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 272778256 + 278656249 = 16516^2 + 16693^2 .

It is not a de Polignac number, because 551434505 - 2⁴ = 551434489 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 55143446 + ... + 55143455.

It is an arithmetic number, because the mean of its divisors is an integer number (165430353).

Almost surely, 2^551434505 is an apocalyptic number.

It is an amenable number.

551434505 is a deficient number, since it is larger than the sum of its proper divisors (110286907).

551434505 is a wasteful number, since it uses less digits than its factorization.

551434505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110286906.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 551434505 is about 23482.6426323785. The cubic root of 551434505 is about 820.0329676414.

The spelling of 551434505 in words is "five hundred fifty-one million, four hundred thirty-four thousand, five hundred five".