6105405221 has 4 divisors (see below), whose sum is σ = 6105876672. Its totient is φ = 6104933772.

The previous prime is 6105405209. The next prime is 6105405227. The reversal of 6105405221 is 1225045016.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6105405221 is a prime.

It is a super-2 number, since 2×6105405221² = 74551945825228117682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6105405227) 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, 215735 + ... + 242388.

It is an arithmetic number, because the mean of its divisors is an integer number (1526469168).

Almost surely, 2^6105405221 is an apocalyptic number.

It is an amenable number.

6105405221 is a deficient number, since it is larger than the sum of its proper divisors (471451).

6105405221 is a wasteful number, since it uses less digits than its factorization.

6105405221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471450.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 6105405221 is about 78137.0924785406. The cubic root of 6105405221 is about 1827.6996608345.

The spelling of 6105405221 in words is "six billion, one hundred five million, four hundred five thousand, two hundred twenty-one".