1081565 has 8 divisors (see below), whose sum is σ = 1305600. Its totient is φ = 860112.

The previous prime is 1081541. The next prime is 1081583. The reversal of 1081565 is 5651801.

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 1081565 - 2⁶ = 1081501 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452 + ... + 1538.

It is an arithmetic number, because the mean of its divisors is an integer number (163200).

2^1081565 is an apocalyptic number.

It is an amenable number.

1081565 is a deficient number, since it is larger than the sum of its proper divisors (224035).

1081565 is a wasteful number, since it uses less digits than its factorization.

1081565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 1081565 is about 1039.9831729408. The cubic root of 1081565 is about 102.6480905185.

The spelling of 1081565 in words is "one million, eighty-one thousand, five hundred sixty-five".