6205121 has 4 divisors (see below), whose sum is σ = 6682452. Its totient is φ = 5727792.

The previous prime is 6205117. The next prime is 6205123. The reversal of 6205121 is 1215026.

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 748225 + 5456896 = 865^2 + 2336^2 .

It is a cyclic number.

It is not a de Polignac number, because 6205121 - 2² = 6205117 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 6205121.

It is not an unprimeable number, because it can be changed into a prime (6205123) 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, 238646 + ... + 238671.

It is an arithmetic number, because the mean of its divisors is an integer number (1670613).

Almost surely, 2^6205121 is an apocalyptic number.

It is an amenable number.

6205121 is a deficient number, since it is larger than the sum of its proper divisors (477331).

6205121 is a wasteful number, since it uses less digits than its factorization.

6205121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477330.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 6205121 is about 2491.0080288911. The cubic root of 6205121 is about 183.7596203333.

The spelling of 6205121 in words is "six million, two hundred five thousand, one hundred twenty-one".