2845565021 has 8 divisors (see below), whose sum is σ = 3067624224. Its totient is φ = 2623958640.

The previous prime is 2845564987. The next prime is 2845565059. The reversal of 2845565021 is 1205655482.

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 2845565021 - 2²² = 2841370717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2845564021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100091 + ... + 125336.

It is an arithmetic number, because the mean of its divisors is an integer number (383453028).

Almost surely, 2^2845565021 is an apocalyptic number.

It is an amenable number.

2845565021 is a deficient number, since it is larger than the sum of its proper divisors (222059203).

2845565021 is a wasteful number, since it uses less digits than its factorization.

2845565021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226411.

The product of its (nonzero) digits is 96000, while the sum is 38.

The square root of 2845565021 is about 53343.8377040872. The cubic root of 2845565021 is about 1417.0641287969.

The spelling of 2845565021 in words is "two billion, eight hundred forty-five million, five hundred sixty-five thousand, twenty-one".