5278749 has 16 divisors (see below), whose sum is σ = 8095872. Its totient is φ = 2996928.

The previous prime is 5278739. The next prime is 5278769. The reversal of 5278749 is 9478725.

It is not a de Polignac number, because 5278749 - 2⁴ = 5278733 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 5278749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5278739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2907 + ... + 4359.

It is an arithmetic number, because the mean of its divisors is an integer number (505992).

Almost surely, 2^5278749 is an apocalyptic number.

It is an amenable number.

5278749 is a deficient number, since it is larger than the sum of its proper divisors (2817123).

5278749 is a wasteful number, since it uses less digits than its factorization.

5278749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636.

The product of its digits is 141120, while the sum is 42.

The square root of 5278749 is about 2297.5528285548. The cubic root of 5278749 is about 174.1180002862.

The spelling of 5278749 in words is "five million, two hundred seventy-eight thousand, seven hundred forty-nine".