6221559 has 4 divisors (see below), whose sum is σ = 8295416. Its totient is φ = 4147704.

The previous prime is 6221557. The next prime is 6221561. The reversal of 6221559 is 9551226.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (6221557) and next prime (6221561).

It is not a de Polignac number, because 6221559 - 2¹ = 6221557 is a prime.

It is a D-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 (6221557) 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, 1036924 + ... + 1036929.

It is an arithmetic number, because the mean of its divisors is an integer number (2073854).

Almost surely, 2^6221559 is an apocalyptic number.

6221559 is a deficient number, since it is larger than the sum of its proper divisors (2073857).

6221559 is a wasteful number, since it uses less digits than its factorization.

6221559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2073856.

The product of its digits is 5400, while the sum is 30.

The square root of 6221559 is about 2494.3053141105. The cubic root of 6221559 is about 183.9217432653.

The spelling of 6221559 in words is "six million, two hundred twenty-one thousand, five hundred fifty-nine".