511217 has 6 divisors (see below), whose sum is σ = 594738. Its totient is φ = 438144.

The previous prime is 511213. The next prime is 511223. The reversal of 511217 is 712115.

It can be written as a sum of positive squares in only one way, i.e., 461041 + 50176 = 679^2 + 224^2 .

It is not a de Polignac number, because 511217 - 2² = 511213 is a prime.

It is a super-2 number, since 2×511217² = 522685642178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 511195 and 511204.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 511217.

It is not an unprimeable number, because it can be changed into a prime (511211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5168 + ... + 5265.

It is an arithmetic number, because the mean of its divisors is an integer number (99123).

2⁵¹¹²¹⁷ is an apocalyptic number.

It is an amenable number.

511217 is a deficient number, since it is larger than the sum of its proper divisors (83521).

511217 is a wasteful number, since it uses less digits than its factorization.

511217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10447 (or 10440 counting only the distinct ones).

The product of its digits is 70, while the sum is 17.

The square root of 511217 is about 714.9944055725. The cubic root of 511217 is about 79.9591979434.

The spelling of 511217 in words is "five hundred eleven thousand, two hundred seventeen".