550300055521 has 2 divisors, whose sum is σ = 550300055522. Its totient is φ = 550300055520.

The previous prime is 550300055489. The next prime is 550300055527. The reversal of 550300055521 is 125550003055.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 524407705600 + 25892349921 = 724160^2 + 160911^2 .

It is a cyclic number.

It is not a de Polignac number, because 550300055521 - 2⁵ = 550300055489 is a prime.

It is a super-2 number, since 2×550300055521² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (550300055527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275150027760 + 275150027761.

It is an arithmetic number, because the mean of its divisors is an integer number (275150027761).

Almost surely, 2^550300055521 is an apocalyptic number.

It is an amenable number.

550300055521 is a deficient number, since it is larger than the sum of its proper divisors (1).

550300055521 is an equidigital number, since it uses as much as digits as its factorization.

550300055521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18750, while the sum is 31.

Adding to 550300055521 its reverse (125550003055), we get a palindrome (675850058576).

The spelling of 550300055521 in words is "five hundred fifty billion, three hundred million, fifty-five thousand, five hundred twenty-one".