1565056 has 16 divisors (see below), whose sum is σ = 3118140. Its totient is φ = 782464.

The previous prime is 1565051. The next prime is 1565059. The reversal of 1565056 is 6505651.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1565051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5986 + ... + 6241.

2^1565056 is an apocalyptic number.

1565056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1565056 is a deficient number, since it is larger than the sum of its proper divisors (1553084).

1565056 is an equidigital number, since it uses as much as digits as its factorization.

1565056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12241 (or 12229 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 1565056 is about 1251.0219822209. The cubic root of 1565056 is about 116.1029605085.

The spelling of 1565056 in words is "one million, five hundred sixty-five thousand, fifty-six".