1081145 has 8 divisors (see below), whose sum is σ = 1397256. Its totient is φ = 798336.

The previous prime is 1081139. The next prime is 1081153. The reversal of 1081145 is 5411801.

It can be written as a sum of positive squares in 4 ways, for example, as 5776 + 1075369 = 76^2 + 1037^2 .

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 1081145 - 2¹⁸ = 819001 is a prime.

It is a super-2 number, since 2×1081145² = 2337749022050, which contains 22 as substring.

It is a Duffinian 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, 8252 + ... + 8381.

It is an arithmetic number, because the mean of its divisors is an integer number (174657).

2^1081145 is an apocalyptic number.

It is an amenable number.

1081145 is a deficient number, since it is larger than the sum of its proper divisors (316111).

1081145 is a wasteful number, since it uses less digits than its factorization.

1081145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16651.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 1081145 is about 1039.7812269896. The cubic root of 1081145 is about 102.6348018181.

Adding to 1081145 its reverse (5411801), we get a palindrome (6492946).

The spelling of 1081145 in words is "one million, eighty-one thousand, one hundred forty-five".