1551253271017 has 2 divisors, whose sum is σ = 1551253271018. Its totient is φ = 1551253271016.

The previous prime is 1551253270961. The next prime is 1551253271033. The reversal of 1551253271017 is 7101723521551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1544591609856 + 6661661161 = 1242816^2 + 81619^2 .

It is an emirp because it is prime and its reverse (7101723521551) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1551253271017 is a prime.

It is not a weakly prime, because it can be changed into another prime (1551253271047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775626635508 + 775626635509.

It is an arithmetic number, because the mean of its divisors is an integer number (775626635509).

Almost surely, 2^{1551253271017} is an apocalyptic number.

It is an amenable number.

1551253271017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551253271017 is an equidigital number, since it uses as much as digits as its factorization.

1551253271017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73500, while the sum is 40.

Adding to 1551253271017 its reverse (7101723521551), we get a palindrome (8652976792568).

The spelling of 1551253271017 in words is "one trillion, five hundred fifty-one billion, two hundred fifty-three million, two hundred seventy-one thousand, seventeen".