5638157 has 4 divisors (see below), whose sum is σ = 6443616. Its totient is φ = 4832700.

The previous prime is 5638147. The next prime is 5638159. The reversal of 5638157 is 7518365.

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 not a de Polignac number, because 5638157 - 2⁴ = 5638141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5638159) 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, 402719 + ... + 402732.

It is an arithmetic number, because the mean of its divisors is an integer number (1610904).

Almost surely, 2^5638157 is an apocalyptic number.

It is an amenable number.

5638157 is a deficient number, since it is larger than the sum of its proper divisors (805459).

5638157 is an equidigital number, since it uses as much as digits as its factorization.

5638157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805458.

The product of its digits is 25200, while the sum is 35.

The square root of 5638157 is about 2374.4803642060. The cubic root of 5638157 is about 177.9832181292.

The spelling of 5638157 in words is "five million, six hundred thirty-eight thousand, one hundred fifty-seven".