5621990 has 16 divisors (see below), whose sum is σ = 11039760. Its totient is φ = 2044320.

The previous prime is 5621989. The next prime is 5622007. The reversal of 5621990 is 991265.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25445 + ... + 25664.

It is an arithmetic number, because the mean of its divisors is an integer number (689985).

Almost surely, 2^5621990 is an apocalyptic number.

5621990 is a deficient number, since it is larger than the sum of its proper divisors (5417770).

5621990 is a wasteful number, since it uses less digits than its factorization.

5621990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51127.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 5621990 is about 2371.0735964959. The cubic root of 5621990 is about 177.8129373457.

It can be divided in two parts, 562 and 1990, that added together give a palindrome (2552).

The spelling of 5621990 in words is "five million, six hundred twenty-one thousand, nine hundred ninety".