5278723 has 4 divisors (see below), whose sum is σ = 5401528. Its totient is φ = 5155920.

The previous prime is 5278699. The next prime is 5278727. The reversal of 5278723 is 3278725.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5278723 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5278727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61338 + ... + 61423.

It is an arithmetic number, because the mean of its divisors is an integer number (1350382).

Almost surely, 2^5278723 is an apocalyptic number.

5278723 is a deficient number, since it is larger than the sum of its proper divisors (122805).

5278723 is a wasteful number, since it uses less digits than its factorization.

5278723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122804.

The product of its digits is 23520, while the sum is 34.

The square root of 5278723 is about 2297.5471703536. The cubic root of 5278723 is about 174.1177144182.

It can be divided in two parts, 5 and 278723, that multiplied together give a triangular number (1393615 = T₁₆₆₉).

The spelling of 5278723 in words is "five million, two hundred seventy-eight thousand, seven hundred twenty-three".