5597621 has 4 divisors (see below), whose sum is σ = 5618700. Its totient is φ = 5576544.

The previous prime is 5597597. The next prime is 5597633. The reversal of 5597621 is 1267955.

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

It can be written as a sum of positive squares in 2 ways, for example, as 819025 + 4778596 = 905^2 + 2186^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5597621 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5597651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10136 + ... + 10673.

It is an arithmetic number, because the mean of its divisors is an integer number (1404675).

Almost surely, 2^5597621 is an apocalyptic number.

It is an amenable number.

5597621 is a deficient number, since it is larger than the sum of its proper divisors (21079).

5597621 is a wasteful number, since it uses less digits than its factorization.

5597621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21078.

The product of its digits is 18900, while the sum is 35.

The square root of 5597621 is about 2365.9292043508. The cubic root of 5597621 is about 177.5556500770. Note that the first 3 decimals are identical.

The spelling of 5597621 in words is "five million, five hundred ninety-seven thousand, six hundred twenty-one".