1551550027 has 2 divisors, whose sum is σ = 1551550028. Its totient is φ = 1551550026.

The previous prime is 1551550001. The next prime is 1551550043. The reversal of 1551550027 is 7200551551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1551550027 - 2¹⁹ = 1551025739 is a prime.

It is a super-3 number, since 3×1551550027³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1551550087) 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, 775775013 + 775775014.

It is an arithmetic number, because the mean of its divisors is an integer number (775775014).

Almost surely, 2^1551550027 is an apocalyptic number.

1551550027 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551550027 is an equidigital number, since it uses as much as digits as its factorization.

1551550027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8750, while the sum is 31.

The square root of 1551550027 is about 39389.7198136773. The cubic root of 1551550027 is about 1157.6801703038.

The spelling of 1551550027 in words is "one billion, five hundred fifty-one million, five hundred fifty thousand, twenty-seven".