226553061521 has 2 divisors, whose sum is σ = 226553061522. Its totient is φ = 226553061520.

The previous prime is 226553061433. The next prime is 226553061533. The reversal of 226553061521 is 125160355622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141008511121 + 85544550400 = 375511^2 + 292480^2 .

It is a cyclic number.

It is not a de Polignac number, because 226553061521 - 2¹⁰ = 226553060497 is a prime.

It is not a weakly prime, because it can be changed into another prime (226553061571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113276530760 + 113276530761.

It is an arithmetic number, because the mean of its divisors is an integer number (113276530761).

Almost surely, 2^226553061521 is an apocalyptic number.

It is an amenable number.

226553061521 is a deficient number, since it is larger than the sum of its proper divisors (1).

226553061521 is an equidigital number, since it uses as much as digits as its factorization.

226553061521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 226553061521 in words is "two hundred twenty-six billion, five hundred fifty-three million, sixty-one thousand, five hundred twenty-one".