1551551234297 has 2 divisors, whose sum is σ = 1551551234298. Its totient is φ = 1551551234296.

The previous prime is 1551551234293. The next prime is 1551551234347. The reversal of 1551551234297 is 7924321551551.

It is an a-pointer prime, because the next prime (1551551234347) can be obtained adding 1551551234297 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1546289763001 + 5261471296 = 1243499^2 + 72536^2 .

It is a cyclic number.

It is not a de Polignac number, because 1551551234297 - 2² = 1551551234293 is a prime.

It is a super-2 number, since 2×1551551234297² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1551551234293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775775617148 + 775775617149.

It is an arithmetic number, because the mean of its divisors is an integer number (775775617149).

Almost surely, 2^{1551551234297} is an apocalyptic number.

It is an amenable number.

1551551234297 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551551234297 is an equidigital number, since it uses as much as digits as its factorization.

1551551234297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1890000, while the sum is 50.

The spelling of 1551551234297 in words is "one trillion, five hundred fifty-one billion, five hundred fifty-one million, two hundred thirty-four thousand, two hundred ninety-seven".