2045564 has 6 divisors (see below), whose sum is σ = 3579744. Its totient is φ = 1022780.

The previous prime is 2045557. The next prime is 2045567. The reversal of 2045564 is 4655402.

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 as a sum of consecutive naturals, namely, 255692 + ... + 255699.

It is an arithmetic number, because the mean of its divisors is an integer number (596624).

2^2045564 is an apocalyptic number.

It is an amenable number.

2045564 is a deficient number, since it is larger than the sum of its proper divisors (1534180).

2045564 is a wasteful number, since it uses less digits than its factorization.

2045564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511395 (or 511393 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2045564 is about 1430.2321489884. The cubic root of 2045564 is about 126.9417138040.

The spelling of 2045564 in words is "two million, forty-five thousand, five hundred sixty-four".