551646877 has 2 divisors, whose sum is σ = 551646878. Its totient is φ = 551646876.

The previous prime is 551646869. The next prime is 551646959. The reversal of 551646877 is 778646155.

It is a happy number.

551646877 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 544708921 + 6937956 = 23339^2 + 2634^2 .

It is a cyclic number.

It is not a de Polignac number, because 551646877 - 2³ = 551646869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551646877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551646377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275823438 + 275823439.

It is an arithmetic number, because the mean of its divisors is an integer number (275823439).

Almost surely, 2^551646877 is an apocalyptic number.

It is an amenable number.

551646877 is a deficient number, since it is larger than the sum of its proper divisors (1).

551646877 is an equidigital number, since it uses as much as digits as its factorization.

551646877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1411200, while the sum is 49.

The square root of 551646877 is about 23487.1640902004. The cubic root of 551646877 is about 820.1382262519.

The spelling of 551646877 in words is "five hundred fifty-one million, six hundred forty-six thousand, eight hundred seventy-seven".