5278287 has 8 divisors (see below), whose sum is σ = 8043136. Its totient is φ = 3016152.

The previous prime is 5278271. The next prime is 5278289. The reversal of 5278287 is 7828725.

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

It is not a de Polignac number, because 5278287 - 2⁴ = 5278271 is a prime.

It is a super-3 number, since 3×5278287³ (a number of 21 digits) contains 333 as substring.

It is a d-powerful number, because it can be written as 5³ + 2²⁰ + 7² + 8² + 2²² + 8⁵ + 7⁴ .

It is a Duffinian number.

5278287 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5278289) 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, 125653 + ... + 125694.

It is an arithmetic number, because the mean of its divisors is an integer number (1005392).

Almost surely, 2^5278287 is an apocalyptic number.

5278287 is a deficient number, since it is larger than the sum of its proper divisors (2764849).

5278287 is a wasteful number, since it uses less digits than its factorization.

5278287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251357.

The product of its digits is 62720, while the sum is 39.

The square root of 5278287 is about 2297.4522845970. The cubic root of 5278287 is about 174.1129204928.

It can be divided in two parts, 5278 and 287, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 5278287 in words is "five million, two hundred seventy-eight thousand, two hundred eighty-seven".