511249 has 4 divisors (see below), whose sum is σ = 512820. Its totient is φ = 509680.

The previous prime is 511243. The next prime is 511261. The reversal of 511249 is 942115.

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

It can be written as a sum of positive squares in 2 ways, for example, as 65025 + 446224 = 255^2 + 668^2 .

It is a cyclic number.

It is not a de Polignac number, because 511249 - 2¹⁵ = 478481 is a prime.

It is a super-2 number, since 2×511249² = 522751080002, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

511249 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (511243) 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, 94 + ... + 1015.

It is an arithmetic number, because the mean of its divisors is an integer number (128205).

2⁵¹¹²⁴⁹ is an apocalyptic number.

It is an amenable number.

511249 is a deficient number, since it is larger than the sum of its proper divisors (1571).

511249 is a wasteful number, since it uses less digits than its factorization.

511249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570.

The product of its digits is 360, while the sum is 22.

The square root of 511249 is about 715.0167830198. The cubic root of 511249 is about 79.9608662767.

The spelling of 511249 in words is "five hundred eleven thousand, two hundred forty-nine".