2049566 has 4 divisors (see below), whose sum is σ = 3074352. Its totient is φ = 1024782.

The previous prime is 2049547. The next prime is 2049569. The reversal of 2049566 is 6659402.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2049569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512390 + ... + 512393.

It is an arithmetic number, because the mean of its divisors is an integer number (768588).

2^2049566 is an apocalyptic number.

2049566 is a deficient number, since it is larger than the sum of its proper divisors (1024786).

2049566 is a wasteful number, since it uses less digits than its factorization.

2049566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024785.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 2049566 is about 1431.6305389310. The cubic root of 2049566 is about 127.0244440105.

The spelling of 2049566 in words is "two million, forty-nine thousand, five hundred sixty-six".