551722857 has 16 divisors (see below), whose sum is σ = 854504832. Its totient is φ = 310101120.

The previous prime is 551722813. The next prime is 551722861. The reversal of 551722857 is 758227155.

551722857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 551722857 - 2¹¹ = 551720809 is a prime.

It is a super-2 number, since 2×551722857² = 608796221872484898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (551722867) 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, 214068 + ... + 216629.

It is an arithmetic number, because the mean of its divisors is an integer number (53406552).

Almost surely, 2^551722857 is an apocalyptic number.

It is an amenable number.

551722857 is a deficient number, since it is larger than the sum of its proper divisors (302781975).

551722857 is a wasteful number, since it uses less digits than its factorization.

551722857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430768.

The product of its digits is 196000, while the sum is 42.

The square root of 551722857 is about 23488.7815137354. The cubic root of 551722857 is about 820.1758778997.

The spelling of 551722857 in words is "five hundred fifty-one million, seven hundred twenty-two thousand, eight hundred fifty-seven".