2045565 has 24 divisors (see below), whose sum is σ = 3583008. Its totient is φ = 1079520.

The previous prime is 2045557. The next prime is 2045567. The reversal of 2045565 is 5655402.

It is not a de Polignac number, because 2045565 - 2³ = 2045557 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045567) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5722 + ... + 6068.

It is an arithmetic number, because the mean of its divisors is an integer number (149292).

2^2045565 is an apocalyptic number.

It is an amenable number.

2045565 is a deficient number, since it is larger than the sum of its proper divisors (1537443).

2045565 is a wasteful number, since it uses less digits than its factorization.

2045565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 2045565 is about 1430.2324985820. The cubic root of 2045565 is about 126.9417344897.

The spelling of 2045565 in words is "two million, forty-five thousand, five hundred sixty-five".