5551385831 has 2 divisors, whose sum is σ = 5551385832. Its totient is φ = 5551385830.

The previous prime is 5551385779. The next prime is 5551385863. The reversal of 5551385831 is 1385831555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5551385831 - 2⁶ = 5551385767 is a prime.

It is a super-2 number, since 2×5551385831² = 61635769289255121122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5551385881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775692915 + 2775692916.

It is an arithmetic number, because the mean of its divisors is an integer number (2775692916).

Almost surely, 2^5551385831 is an apocalyptic number.

5551385831 is a deficient number, since it is larger than the sum of its proper divisors (1).

5551385831 is an equidigital number, since it uses as much as digits as its factorization.

5551385831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360000, while the sum is 44.

The square root of 5551385831 is about 74507.6226368819. The cubic root of 5551385831 is about 1770.6544050490.

The spelling of 5551385831 in words is "five billion, five hundred fifty-one million, three hundred eighty-five thousand, eight hundred thirty-one".