5621997 has 8 divisors (see below), whose sum is σ = 7528320. Its totient is φ = 3731840.

The previous prime is 5621989. The next prime is 5622007. The reversal of 5621997 is 7991265.

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 5621997 - 2³ = 5621989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5621927) 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 7 ways as a sum of consecutive naturals, for example, 3204 + ... + 4637.

It is an arithmetic number, because the mean of its divisors is an integer number (941040).

Almost surely, 2^5621997 is an apocalyptic number.

It is an amenable number.

5621997 is a deficient number, since it is larger than the sum of its proper divisors (1906323).

5621997 is a wasteful number, since it uses less digits than its factorization.

5621997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8083.

The product of its digits is 34020, while the sum is 39.

The square root of 5621997 is about 2371.0750726200. The cubic root of 5621997 is about 177.8130111446.

It can be divided in two parts, 562199 and 7, that multiplied together give a palindrome (3935393).

The spelling of 5621997 in words is "five million, six hundred twenty-one thousand, nine hundred ninety-seven".