511969 has 8 divisors (see below), whose sum is σ = 534888. Its totient is φ = 489600.

The previous prime is 511963. The next prime is 511991. The reversal of 511969 is 969115.

It can be written as a sum of positive squares in 4 ways, for example, as 342225 + 169744 = 585^2 + 412^2 .

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 511969 - 2³ = 511961 is a prime.

It is a super-2 number, since 2×511969² = 524224513922, which contains 22 as substring.

It is a deceptive number, since it divides R₅₁₁₉₆₈.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 511969.

It is not an unprimeable number, because it can be changed into a prime (511961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3669 + ... + 3805.

It is an arithmetic number, because the mean of its divisors is an integer number (66861).

2⁵¹¹⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

511969 is a deficient number, since it is larger than the sum of its proper divisors (22919).

511969 is a wasteful number, since it uses less digits than its factorization.

511969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275.

The product of its digits is 2430, while the sum is 31.

The square root of 511969 is about 715.5200905635. The cubic root of 511969 is about 79.9983853841.

Adding to 511969 its sum of digits (31), we get a cube (512000 = 80³).

The spelling of 511969 in words is "five hundred eleven thousand, nine hundred sixty-nine".