5633621 has 4 divisors (see below), whose sum is σ = 6438432. Its totient is φ = 4828812.

The previous prime is 5633591. The next prime is 5633623. The reversal of 5633621 is 1263365.

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 5633621 - 2¹⁰ = 5632597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5633623) 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, 402395 + ... + 402408.

It is an arithmetic number, because the mean of its divisors is an integer number (1609608).

Almost surely, 2^5633621 is an apocalyptic number.

It is an amenable number.

5633621 is a deficient number, since it is larger than the sum of its proper divisors (804811).

5633621 is an equidigital number, since it uses as much as digits as its factorization.

5633621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804810.

The product of its digits is 3240, while the sum is 26.

The square root of 5633621 is about 2373.5250156676. The cubic root of 5633621 is about 177.9354750766.

Adding to 5633621 its reverse (1263365), we get a palindrome (6896986).

The spelling of 5633621 in words is "five million, six hundred thirty-three thousand, six hundred twenty-one".