5219645 has 4 divisors (see below), whose sum is σ = 6263580. Its totient is φ = 4175712.

The previous prime is 5219639. The next prime is 5219651. The reversal of 5219645 is 5469125.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (5219639) and next prime (5219651).

It can be written as a sum of positive squares in 2 ways, for example, as 1110916 + 4108729 = 1054^2 + 2027^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5219645 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521960 + ... + 521969.

It is an arithmetic number, because the mean of its divisors is an integer number (1565895).

Almost surely, 2^5219645 is an apocalyptic number.

It is an amenable number.

5219645 is a deficient number, since it is larger than the sum of its proper divisors (1043935).

5219645 is a wasteful number, since it uses less digits than its factorization.

5219645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043934.

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

The square root of 5219645 is about 2284.6542407988. The cubic root of 5219645 is about 173.4657169955.

The spelling of 5219645 in words is "five million, two hundred nineteen thousand, six hundred forty-five".