506555322529 has 3 divisors (see below), whose sum is σ = 506556034257. Its totient is φ = 506554610802.

The previous prime is 506555322479. The next prime is 506555322563. The reversal of 506555322529 is 925223555605.

It is a happy number.

The square root of 506555322529 is 711727.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 506555322529 - 2¹³ = 506555314337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (506555022529) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 355864 + ... + 1067590.

It is an arithmetic number, because the mean of its divisors is an integer number (168852011419).

Almost surely, 2^506555322529 is an apocalyptic number.

506555322529 is the 711727-th square number.

506555322529 is the 355864-th centered octagonal number.

It is an amenable number.

506555322529 is a deficient number, since it is larger than the sum of its proper divisors (711728).

506555322529 is an frugal number, since it uses more digits than its factorization.

506555322529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423454 (or 711727 counting only the distinct ones).

The product of its (nonzero) digits is 4050000, while the sum is 49.

Multiplying 506555322529 by its sum of digits (49), we get a square (24821210803921 = 4982089²).

The spelling of 506555322529 in words is "five hundred six billion, five hundred fifty-five million, three hundred twenty-two thousand, five hundred twenty-nine".