1551327671 has 2 divisors, whose sum is σ = 1551327672. Its totient is φ = 1551327670.

The previous prime is 1551327611. The next prime is 1551327703. The reversal of 1551327671 is 1767231551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1551327671 - 2⁶ = 1551327607 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1551327611) 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, 775663835 + 775663836.

It is an arithmetic number, because the mean of its divisors is an integer number (775663836).

Almost surely, 2^1551327671 is an apocalyptic number.

1551327671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551327671 is an equidigital number, since it uses as much as digits as its factorization.

1551327671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44100, while the sum is 38.

The square root of 1551327671 is about 39386.8971994495. The cubic root of 1551327671 is about 1157.6248644429.

The spelling of 1551327671 in words is "one billion, five hundred fifty-one million, three hundred twenty-seven thousand, six hundred seventy-one".