1111545 has 24 divisors (see below), whose sum is σ = 2041416. Its totient is φ = 557568.

The previous prime is 1111543. The next prime is 1111547. The reversal of 1111545 is 5451111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1111543) and next prime (1111547).

It can be written as a sum of positive squares in 4 ways, for example, as 553536 + 558009 = 744^2 + 747^2 .

It is not a de Polignac number, because 1111545 - 2¹ = 1111543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39 + ... + 1491.

It is an arithmetic number, because the mean of its divisors is an integer number (85059).

2^1111545 is an apocalyptic number.

1111545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1111545 is a deficient number, since it is larger than the sum of its proper divisors (929871).

1111545 is a wasteful number, since it uses less digits than its factorization.

1111545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481 (or 1478 counting only the distinct ones).

The product of its digits is 100, while the sum is 18.

The square root of 1111545 is about 1054.2983448721. The cubic root of 1111545 is about 103.5878970472.

Adding to 1111545 its reverse (5451111), we get a palindrome (6562656).

The spelling of 1111545 in words is "one million, one hundred eleven thousand, five hundred forty-five".