1061281 has 4 divisors (see below), whose sum is σ = 1142932. Its totient is φ = 979632.

The previous prime is 1061279. The next prime is 1061287. The reversal of 1061281 is 1821601.

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

It can be written as a sum of positive squares in 2 ways, for example, as 435600 + 625681 = 660^2 + 791^2 .

It is a cyclic number.

It is not a de Polignac number, because 1061281 - 2¹ = 1061279 is a prime.

It is a super-2 number, since 2×1061281² = 2252634721922, which contains 22 as substring.

It is a Duffinian number.

1061281 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1061287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40806 + ... + 40831.

It is an arithmetic number, because the mean of its divisors is an integer number (285733).

2^1061281 is an apocalyptic number.

It is an amenable number.

1061281 is a deficient number, since it is larger than the sum of its proper divisors (81651).

1061281 is an equidigital number, since it uses as much as digits as its factorization.

1061281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81650.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 1061281 is about 1030.1849348539. The cubic root of 1061281 is about 102.0023387904.

Adding to 1061281 its reverse (1821601), we get a palindrome (2882882).

The spelling of 1061281 in words is "one million, sixty-one thousand, two hundred eighty-one".