5638513 has 4 divisors (see below), whose sum is σ = 5696740. Its totient is φ = 5580288.

The previous prime is 5638489. The next prime is 5638517. The reversal of 5638513 is 3158365.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4276624 + 1361889 = 2068^2 + 1167^2 .

It is a cyclic number.

It is not a de Polignac number, because 5638513 - 2¹⁷ = 5507441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5638517) 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, 28968 + ... + 29161.

It is an arithmetic number, because the mean of its divisors is an integer number (1424185).

Almost surely, 2^5638513 is an apocalyptic number.

It is an amenable number.

5638513 is a deficient number, since it is larger than the sum of its proper divisors (58227).

5638513 is an equidigital number, since it uses as much as digits as its factorization.

5638513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58226.

The product of its digits is 10800, while the sum is 31.

The square root of 5638513 is about 2374.5553267928. Note that the first 3 decimals coincide. The cubic root of 5638513 is about 177.9869640750.

The spelling of 5638513 in words is "five million, six hundred thirty-eight thousand, five hundred thirteen".