511278 has 8 divisors (see below), whose sum is σ = 1022568. Its totient is φ = 170424.

The previous prime is 511261. The next prime is 511279. The reversal of 511278 is 872115.

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

511278 is an admirable number.

It is a super-2 number, since 2×511278² = 522810386568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511279) 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, 42601 + ... + 42612.

It is an arithmetic number, because the mean of its divisors is an integer number (127821).

2⁵¹¹²⁷⁸ is an apocalyptic number.

511278 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

511278 is a wasteful number, since it uses less digits than its factorization.

511278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85218.

The product of its digits is 560, while the sum is 24.

The square root of 511278 is about 715.0370619765. The cubic root of 511278 is about 79.9623781436.

The spelling of 511278 in words is "five hundred eleven thousand, two hundred seventy-eight".