551505061 has 8 divisors (see below), whose sum is σ = 555351704. Its totient is φ = 547672320.

The previous prime is 551505049. The next prime is 551505113. The reversal of 551505061 is 160505155.

551505061 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 39614436 + 511890625 = 6294^2 + 22625^2 .

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 551505061 - 2⁵ = 551505029 is a prime.

It is a super-2 number, since 2×551505061² = 608315664617227442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551505161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83521 + ... + 89881.

It is an arithmetic number, because the mean of its divisors is an integer number (69418963).

Almost surely, 2^551505061 is an apocalyptic number.

It is an amenable number.

551505061 is a deficient number, since it is larger than the sum of its proper divisors (3846643).

551505061 is a wasteful number, since it uses less digits than its factorization.

551505061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6951.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 551505061 is about 23484.1448854328. The cubic root of 551505061 is about 820.0679405337.

The spelling of 551505061 in words is "five hundred fifty-one million, five hundred five thousand, sixty-one".