551898877 has 2 divisors, whose sum is σ = 551898878. Its totient is φ = 551898876.

The previous prime is 551898857. The next prime is 551898889. The reversal of 551898877 is 778898155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 436851801 + 115047076 = 20901^2 + 10726^2 .

It is a cyclic number.

It is not a de Polignac number, because 551898877 - 2⁷ = 551898749 is a prime.

It is a super-2 number, since 2×551898877² = 609184740867722258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551898847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275949438 + 275949439.

It is an arithmetic number, because the mean of its divisors is an integer number (275949439).

Almost surely, 2^551898877 is an apocalyptic number.

It is an amenable number.

551898877 is a deficient number, since it is larger than the sum of its proper divisors (1).

551898877 is an equidigital number, since it uses as much as digits as its factorization.

551898877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5644800, while the sum is 58.

The square root of 551898877 is about 23492.5281100183. The cubic root of 551898877 is about 820.2630907736.

The spelling of 551898877 in words is "five hundred fifty-one million, eight hundred ninety-eight thousand, eight hundred seventy-seven".