5621445 has 24 divisors (see below), whose sum is σ = 9931896. Its totient is φ = 2940288.

The previous prime is 5621443. The next prime is 5621467. The reversal of 5621445 is 5441265.

It can be written as a sum of positive squares in 4 ways, for example, as 381924 + 5239521 = 618^2 + 2289^2 .

It is not a de Polignac number, because 5621445 - 2¹ = 5621443 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5621443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1207 + ... + 3563.

It is an arithmetic number, because the mean of its divisors is an integer number (413829).

Almost surely, 2^5621445 is an apocalyptic number.

It is an amenable number.

5621445 is a deficient number, since it is larger than the sum of its proper divisors (4310451).

5621445 is a wasteful number, since it uses less digits than its factorization.

5621445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421 (or 2418 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 5621445 is about 2370.9586668687. The cubic root of 5621445 is about 177.8071913861.

The spelling of 5621445 in words is "five million, six hundred twenty-one thousand, four hundred forty-five".