551523522250121 has 2 divisors, whose sum is σ = 551523522250122. Its totient is φ = 551523522250120.

The previous prime is 551523522250109. The next prime is 551523522250157. The reversal of 551523522250121 is 121052225325155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 298076772010000 + 253446750240121 = 17264900^2 + 15920011^2 .

It is a cyclic number.

It is not a de Polignac number, because 551523522250121 - 2³⁴ = 551506342380937 is a prime.

It is not a weakly prime, because it can be changed into another prime (551523522250721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275761761125060 + 275761761125061.

It is an arithmetic number, because the mean of its divisors is an integer number (275761761125061).

Almost surely, 2^{551523522250121} is an apocalyptic number.

It is an amenable number.

551523522250121 is a deficient number, since it is larger than the sum of its proper divisors (1).

551523522250121 is an equidigital number, since it uses as much as digits as its factorization.

551523522250121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300000, while the sum is 41.

Adding to 551523522250121 its reverse (121052225325155), we get a palindrome (672575747575276).

The spelling of 551523522250121 in words is "five hundred fifty-one trillion, five hundred twenty-three billion, five hundred twenty-two million, two hundred fifty thousand, one hundred twenty-one".