7554585485221 has 2 divisors, whose sum is σ = 7554585485222. Its totient is φ = 7554585485220.

The previous prime is 7554585485179. The next prime is 7554585485231. The reversal of 7554585485221 is 1225845854557.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7188029102500 + 366556382721 = 2681050^2 + 605439^2 .

It is an emirp because it is prime and its reverse (1225845854557) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7554585485221 - 2¹⁹ = 7554584960933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7554585485221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7554585485231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3777292742610 + 3777292742611.

It is an arithmetic number, because the mean of its divisors is an integer number (3777292742611).

Almost surely, 2^{7554585485221} is an apocalyptic number.

It is an amenable number.

7554585485221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7554585485221 is an equidigital number, since it uses as much as digits as its factorization.

7554585485221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 89600000, while the sum is 61.

The spelling of 7554585485221 in words is "seven trillion, five hundred fifty-four billion, five hundred eighty-five million, four hundred eighty-five thousand, two hundred twenty-one".