5638507 has 4 divisors (see below), whose sum is σ = 6444016. Its totient is φ = 4833000.

The previous prime is 5638489. The next prime is 5638517. The reversal of 5638507 is 7058365.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 5638507 - 2⁷ = 5638379 is a prime.

It is a super-2 number, since 2×5638507² = 63585522378098, which contains 22 as substring.

It is an Ulam number.

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 (5638517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402744 + ... + 402757.

It is an arithmetic number, because the mean of its divisors is an integer number (1611004).

Almost surely, 2^5638507 is an apocalyptic number.

5638507 is a deficient number, since it is larger than the sum of its proper divisors (805509).

5638507 is an equidigital number, since it uses as much as digits as its factorization.

5638507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805508.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 5638507 is about 2374.5540633980. The cubic root of 5638507 is about 177.9869009424.

The spelling of 5638507 in words is "five million, six hundred thirty-eight thousand, five hundred seven".