551081771 has 16 divisors (see below), whose sum is σ = 587692800. Its totient is φ = 515616288.

The previous prime is 551081753. The next prime is 551081803. The reversal of 551081771 is 177180155.

551081771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 551081771 - 2¹⁸ = 550819627 is a prime.

It is a super-2 number, since 2×551081771² = 607382236656992882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551081701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307145 + ... + 308933.

It is an arithmetic number, because the mean of its divisors is an integer number (36730800).

Almost surely, 2^551081771 is an apocalyptic number.

551081771 is a deficient number, since it is larger than the sum of its proper divisors (36611029).

551081771 is a wasteful number, since it uses less digits than its factorization.

551081771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098.

The product of its (nonzero) digits is 9800, while the sum is 35.

The square root of 551081771 is about 23475.1309048533. The cubic root of 551081771 is about 819.8580812295.

The spelling of 551081771 in words is "five hundred fifty-one million, eighty-one thousand, seven hundred seventy-one".