551889689 has 8 divisors (see below), whose sum is σ = 605557512. Its totient is φ = 499824000.

The previous prime is 551889677. The next prime is 551889719. The reversal of 551889689 is 986988155.

It can be written as a sum of positive squares in 4 ways, for example, as 15625 + 551874064 = 125^2 + 23492^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 551889689 - 2¹⁶ = 551824153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551889619) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 399812 + ... + 401189.

It is an arithmetic number, because the mean of its divisors is an integer number (75694689).

Almost surely, 2^551889689 is an apocalyptic number.

It is an amenable number.

551889689 is a deficient number, since it is larger than the sum of its proper divisors (53667823).

551889689 is a wasteful number, since it uses less digits than its factorization.

551889689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801067.

The product of its digits is 6220800, while the sum is 59.

The square root of 551889689 is about 23492.3325576666. The cubic root of 551889689 is about 820.2585388413.

The spelling of 551889689 in words is "five hundred fifty-one million, eight hundred eighty-nine thousand, six hundred eighty-nine".