505506471 has 4 divisors (see below), whose sum is σ = 674008632. Its totient is φ = 337004312.

The previous prime is 505506433. The next prime is 505506497. The reversal of 505506471 is 174605505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 505506471 - 2¹⁹ = 504982183 is a prime.

It is a super-3 number, since 3×505506471³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505506401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84251076 + ... + 84251081.

It is an arithmetic number, because the mean of its divisors is an integer number (168502158).

Almost surely, 2^505506471 is an apocalyptic number.

505506471 is a deficient number, since it is larger than the sum of its proper divisors (168502161).

505506471 is a wasteful number, since it uses less digits than its factorization.

505506471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168502160.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 505506471 is about 22483.4710620936. The cubic root of 505506471 is about 796.6035542479.

The spelling of 505506471 in words is "five hundred five million, five hundred six thousand, four hundred seventy-one".