5642521 has 8 divisors (see below), whose sum is σ = 6234624. Its totient is φ = 5079360.

The previous prime is 5642513. The next prime is 5642531. The reversal of 5642521 is 1252465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5642521 - 2³ = 5642513 is a prime.

It is a Duffinian number.

5642521 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5642531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6825 + ... + 7606.

It is an arithmetic number, because the mean of its divisors is an integer number (779328).

Almost surely, 2^5642521 is an apocalyptic number.

It is an amenable number.

5642521 is a deficient number, since it is larger than the sum of its proper divisors (592103).

5642521 is a wasteful number, since it uses less digits than its factorization.

5642521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14471.

The product of its digits is 2400, while the sum is 25.

The square root of 5642521 is about 2375.3991243578. The cubic root of 5642521 is about 178.0291266565.

Adding to 5642521 its reverse (1252465), we get a palindrome (6894986).

The spelling of 5642521 in words is "five million, six hundred forty-two thousand, five hundred twenty-one".