5218923 has 4 divisors (see below), whose sum is σ = 6958568. Its totient is φ = 3479280.

The previous prime is 5218919. The next prime is 5218933. The reversal of 5218923 is 3298125.

It is a happy number.

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

It is not a de Polignac number, because 5218923 - 2² = 5218919 is a prime.

It is a D-number.

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

It is a Duffinian number.

5218923 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5218933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 869818 + ... + 869823.

It is an arithmetic number, because the mean of its divisors is an integer number (1739642).

Almost surely, 2^5218923 is an apocalyptic number.

5218923 is a deficient number, since it is larger than the sum of its proper divisors (1739645).

5218923 is a wasteful number, since it uses less digits than its factorization.

5218923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739644.

The product of its digits is 4320, while the sum is 30.

The square root of 5218923 is about 2284.4962245537. The cubic root of 5218923 is about 173.4577184935.

The spelling of 5218923 in words is "five million, two hundred eighteen thousand, nine hundred twenty-three".