1081567 has 4 divisors (see below), whose sum is σ = 1086520. Its totient is φ = 1076616.

The previous prime is 1081541. The next prime is 1081583. The reversal of 1081567 is 7651801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7651801 = 23 ⋅332687.

It is a cyclic number.

It is not a de Polignac number, because 1081567 - 2¹⁵ = 1048799 is a prime.

It is a super-3 number, since 3×1081567³ = 3795609618096333789, which contains 333 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1781567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2133 + ... + 2590.

It is an arithmetic number, because the mean of its divisors is an integer number (271630).

2^1081567 is an apocalyptic number.

1081567 is a deficient number, since it is larger than the sum of its proper divisors (4953).

1081567 is an equidigital number, since it uses as much as digits as its factorization.

1081567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4952.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 1081567 is about 1039.9841344944. The cubic root of 1081567 is about 102.6481537898.

The spelling of 1081567 in words is "one million, eighty-one thousand, five hundred sixty-seven".