5255677421 has 2 divisors, whose sum is σ = 5255677422. Its totient is φ = 5255677420.

The previous prime is 5255677417. The next prime is 5255677423. The reversal of 5255677421 is 1247765525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5021281321 + 234396100 = 70861^2 + 15310^2 .

It is a cyclic number.

It is not a de Polignac number, because 5255677421 - 2² = 5255677417 is a prime.

It is a super-2 number, since 2×5255677421² = 55244290307218422482, which contains 22 as substring.

Together with 5255677423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5255677423) 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, 2627838710 + 2627838711.

It is an arithmetic number, because the mean of its divisors is an integer number (2627838711).

Almost surely, 2^5255677421 is an apocalyptic number.

It is an amenable number.

5255677421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5255677421 is an equidigital number, since it uses as much as digits as its factorization.

5255677421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 588000, while the sum is 44.

The square root of 5255677421 is about 72496.0510717653. The cubic root of 5255677421 is about 1738.6396004461.

The spelling of 5255677421 in words is "five billion, two hundred fifty-five million, six hundred seventy-seven thousand, four hundred twenty-one".