1111045 has 8 divisors (see below), whose sum is σ = 1435896. Its totient is φ = 820416.

The previous prime is 1111043. The next prime is 1111049. The reversal of 1111045 is 5401111.

It can be written as a sum of positive squares in 4 ways, for example, as 25281 + 1085764 = 159^2 + 1042^2 .

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 1111045 - 2¹ = 1111043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8482 + ... + 8611.

It is an arithmetic number, because the mean of its divisors is an integer number (179487).

2^1111045 is an apocalyptic number.

It is an amenable number.

1111045 is a deficient number, since it is larger than the sum of its proper divisors (324851).

1111045 is a wasteful number, since it uses less digits than its factorization.

1111045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17111.

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 1111045 is about 1054.0611936695. The cubic root of 1111045 is about 103.5723625985.

Adding to 1111045 its reverse (5401111), we get a palindrome (6512156).

It can be divided in two parts, 111 and 1045, that added together give a square (1156 = 34²).

The spelling of 1111045 in words is "one million, one hundred eleven thousand, forty-five".