520554104512373 has 2 divisors, whose sum is σ = 520554104512374. Its totient is φ = 520554104512372.

The previous prime is 520554104512369. The next prime is 520554104512459. The reversal of 520554104512373 is 373215401455025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395891922203089 + 124662182309284 = 19897033^2 + 11165222^2 .

It is a cyclic number.

It is not a de Polignac number, because 520554104512373 - 2² = 520554104512369 is a prime.

It is a super-3 number, since 3×520554104512373³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520554104512313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260277052256186 + 260277052256187.

It is an arithmetic number, because the mean of its divisors is an integer number (260277052256187).

Almost surely, 2^{520554104512373} is an apocalyptic number.

It is an amenable number.

520554104512373 is a deficient number, since it is larger than the sum of its proper divisors (1).

520554104512373 is an equidigital number, since it uses as much as digits as its factorization.

520554104512373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520000, while the sum is 47.

Adding to 520554104512373 its reverse (373215401455025), we get a palindrome (893769505967398).

The spelling of 520554104512373 in words is "five hundred twenty trillion, five hundred fifty-four billion, one hundred four million, five hundred twelve thousand, three hundred seventy-three".