5638523 has 4 divisors (see below), whose sum is σ = 6151128. Its totient is φ = 5125920.

The previous prime is 5638517. The next prime is 5638531. The reversal of 5638523 is 3258365.

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

It is a cyclic number.

It is not a de Polignac number, because 5638523 - 2¹² = 5634427 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5638523.

It is not an unprimeable number, because it can be changed into a prime (5638223) 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, 256286 + ... + 256307.

It is an arithmetic number, because the mean of its divisors is an integer number (1537782).

Almost surely, 2^5638523 is an apocalyptic number.

5638523 is a deficient number, since it is larger than the sum of its proper divisors (512605).

5638523 is a wasteful number, since it uses less digits than its factorization.

5638523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512604.

The product of its digits is 21600, while the sum is 32.

The square root of 5638523 is about 2374.5574324493. The cubic root of 5638523 is about 177.9870692959.

It can be divided in two parts, 56385 and 23, that multiplied together give a triangular number (1296855 = T₁₆₁₀).

The spelling of 5638523 in words is "five million, six hundred thirty-eight thousand, five hundred twenty-three".