506213871 has 4 divisors (see below), whose sum is σ = 674951832. Its totient is φ = 337475912.

The previous prime is 506213833. The next prime is 506213881. The reversal of 506213871 is 178312605.

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 506213871 - 2²¹ = 504116719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506213881) 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, 84368976 + ... + 84368981.

It is an arithmetic number, because the mean of its divisors is an integer number (168737958).

Almost surely, 2^506213871 is an apocalyptic number.

506213871 is a deficient number, since it is larger than the sum of its proper divisors (168737961).

506213871 is a wasteful number, since it uses less digits than its factorization.

506213871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168737960.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 506213871 is about 22499.1971190085. The cubic root of 506213871 is about 796.9749670327.

The spelling of 506213871 in words is "five hundred six million, two hundred thirteen thousand, eight hundred seventy-one".