505211999 has 8 divisors (see below), whose sum is σ = 512904960. Its totient is φ = 497572000.

The previous prime is 505211983. The next prime is 505212007. The reversal of 505211999 is 999112505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 505211999 - 2⁴ = 505211983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505211939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6197 + ... + 32385.

It is an arithmetic number, because the mean of its divisors is an integer number (64113120).

Almost surely, 2^505211999 is an apocalyptic number.

505211999 is a deficient number, since it is larger than the sum of its proper divisors (7692961).

505211999 is a wasteful number, since it uses less digits than its factorization.

505211999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26481.

The product of its (nonzero) digits is 36450, while the sum is 41.

The square root of 505211999 is about 22476.9214751487. The cubic root of 505211999 is about 796.4488427394.

The spelling of 505211999 in words is "five hundred five million, two hundred eleven thousand, nine hundred ninety-nine".