5216945 has 8 divisors (see below), whose sum is σ = 6346536. Its totient is φ = 4116096.

The previous prime is 5216941. The next prime is 5216947. The reversal of 5216945 is 5496125.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 289 + 5216656 = 17^2 + 2284^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5216945 - 2² = 5216941 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 (5216941) 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 7 ways as a sum of consecutive naturals, for example, 6782 + ... + 7511.

It is an arithmetic number, because the mean of its divisors is an integer number (793317).

Almost surely, 2^5216945 is an apocalyptic number.

It is an amenable number.

5216945 is a deficient number, since it is larger than the sum of its proper divisors (1129591).

5216945 is a wasteful number, since it uses less digits than its factorization.

5216945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14371.

The product of its digits is 10800, while the sum is 32.

The square root of 5216945 is about 2284.0632653234. The cubic root of 5216945 is about 173.4358019204.

The spelling of 5216945 in words is "five million, two hundred sixteen thousand, nine hundred forty-five".