5216645 has 16 divisors (see below), whose sum is σ = 7223040. Its totient is φ = 3542784.

The previous prime is 5216623. The next prime is 5216663. The reversal of 5216645 is 5466125.

5216645 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5216645 - 2⁶ = 5216581 is a prime.

5216645 is strictly pandigital in base 8.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3296 + ... + 4614.

It is an arithmetic number, because the mean of its divisors is an integer number (451440).

Almost surely, 2^5216645 is an apocalyptic number.

5216645 is the 1319-th octagonal number.

It is an amenable number.

5216645 is a deficient number, since it is larger than the sum of its proper divisors (2006395).

5216645 is a wasteful number, since it uses less digits than its factorization.

5216645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444.

The product of its digits is 7200, while the sum is 29.

The square root of 5216645 is about 2283.9975919427. The cubic root of 5216645 is about 173.4324773861.

The spelling of 5216645 in words is "five million, two hundred sixteen thousand, six hundred forty-five".