5278249 has 2 divisors, whose sum is σ = 5278250. Its totient is φ = 5278248.

The previous prime is 5278237. The next prime is 5278253. The reversal of 5278249 is 9428725.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4995225 + 283024 = 2235^2 + 532^2 .

It is a cyclic number.

It is not a de Polignac number, because 5278249 - 2¹⁹ = 4753961 is a prime.

It is a d-powerful number, because it can be written as 5⁶ + 2¹⁷ + 7⁵ + 8⁴ + 2¹⁸ + 4⁸ + 9⁷ .

5278249 is a lucky number.

It is equal to p₃₆₆₄₉₉ and since 5278249 and 366499 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (5278289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2639124 + 2639125.

It is an arithmetic number, because the mean of its divisors is an integer number (2639125).

Almost surely, 2^5278249 is an apocalyptic number.

It is an amenable number.

5278249 is a deficient number, since it is larger than the sum of its proper divisors (1).

5278249 is an equidigital number, since it uses as much as digits as its factorization.

5278249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 37.

The square root of 5278249 is about 2297.4440145518. Note that the first 3 decimals coincide. The cubic root of 5278249 is about 174.1125026611.

The spelling of 5278249 in words is "five million, two hundred seventy-eight thousand, two hundred forty-nine".