5243657 has 4 divisors (see below), whose sum is σ = 5248836. Its totient is φ = 5238480.

The previous prime is 5243647. The next prime is 5243669. The reversal of 5243657 is 7563425.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 900601 + 4343056 = 949^2 + 2084^2 .

It is a cyclic number.

It is not a de Polignac number, because 5243657 - 2⁶ = 5243593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5243647) 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, 518 + ... + 3279.

It is an arithmetic number, because the mean of its divisors is an integer number (1312209).

Almost surely, 2^5243657 is an apocalyptic number.

It is an amenable number.

5243657 is a deficient number, since it is larger than the sum of its proper divisors (5179).

5243657 is a wasteful number, since it uses less digits than its factorization.

5243657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5178.

The product of its digits is 25200, while the sum is 32.

The square root of 5243657 is about 2289.9032730664. The cubic root of 5243657 is about 173.7313089982.

The spelling of 5243657 in words is "five million, two hundred forty-three thousand, six hundred fifty-seven".