5623513 has 4 divisors (see below), whose sum is σ = 6426880. Its totient is φ = 4820148.

The previous prime is 5623507. The next prime is 5623517. The reversal of 5623513 is 3153265.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5623513 is a prime.

It is a super-2 number, since 2×5623513² = 63247796922338, which contains 22 as substring.

It is a Duffinian number.

5623513 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5623517) 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, 401673 + ... + 401686.

It is an arithmetic number, because the mean of its divisors is an integer number (1606720).

Almost surely, 2^5623513 is an apocalyptic number.

It is an amenable number.

5623513 is a deficient number, since it is larger than the sum of its proper divisors (803367).

5623513 is an equidigital number, since it uses as much as digits as its factorization.

5623513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803366.

The product of its digits is 2700, while the sum is 25.

The square root of 5623513 is about 2371.3947372802. The cubic root of 5623513 is about 177.8289924349.

Adding to 5623513 its reverse (3153265), we get a palindrome (8776778).

The spelling of 5623513 in words is "five million, six hundred twenty-three thousand, five hundred thirteen".