553315535221 has 2 divisors, whose sum is σ = 553315535222. Its totient is φ = 553315535220.

The previous prime is 553315535207. The next prime is 553315535231. The reversal of 553315535221 is 122535513355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 299193684196 + 254121851025 = 546986^2 + 504105^2 .

It is a cyclic number.

It is not a de Polignac number, because 553315535221 - 2¹³ = 553315527029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (553315535231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276657767610 + 276657767611.

It is an arithmetic number, because the mean of its divisors is an integer number (276657767611).

Almost surely, 2^553315535221 is an apocalyptic number.

It is an amenable number.

553315535221 is a deficient number, since it is larger than the sum of its proper divisors (1).

553315535221 is an equidigital number, since it uses as much as digits as its factorization.

553315535221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 337500, while the sum is 40.

The spelling of 553315535221 in words is "five hundred fifty-three billion, three hundred fifteen million, five hundred thirty-five thousand, two hundred twenty-one".