523405450549 has 2 divisors, whose sum is σ = 523405450550. Its totient is φ = 523405450548.

The previous prime is 523405450511. The next prime is 523405450553. The reversal of 523405450549 is 945054504325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 425064880900 + 98340569649 = 651970^2 + 313593^2 .

It is a cyclic number.

It is not a de Polignac number, because 523405450549 - 2¹⁵ = 523405417781 is a prime.

It is a super-3 number, since 3×523405450549³ (a number of 36 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 523405450499 and 523405450508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523405450049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261702725274 + 261702725275.

It is an arithmetic number, because the mean of its divisors is an integer number (261702725275).

Almost surely, 2^523405450549 is an apocalyptic number.

It is an amenable number.

523405450549 is a deficient number, since it is larger than the sum of its proper divisors (1).

523405450549 is an equidigital number, since it uses as much as digits as its factorization.

523405450549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160000, while the sum is 46.

The spelling of 523405450549 in words is "five hundred twenty-three billion, four hundred five million, four hundred fifty thousand, five hundred forty-nine".