1105440523 has 4 divisors (see below), whose sum is σ = 1205935128. Its totient is φ = 1004945920.

The previous prime is 1105440509. The next prime is 1105440529. The reversal of 1105440523 is 3250445011.

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: 3250445011 = 11 ⋅295495001.

It is not a de Polignac number, because 1105440523 - 2⁵ = 1105440491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1105440529) 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, 50247286 + ... + 50247307.

It is an arithmetic number, because the mean of its divisors is an integer number (301483782).

Almost surely, 2^1105440523 is an apocalyptic number.

1105440523 is a deficient number, since it is larger than the sum of its proper divisors (100494605).

1105440523 is a wasteful number, since it uses less digits than its factorization.

1105440523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100494604.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1105440523 is about 33248.1657088026. The cubic root of 1105440523 is about 1033.9791791080.

Adding to 1105440523 its reverse (3250445011), we get a palindrome (4355885534).

The spelling of 1105440523 in words is "one billion, one hundred five million, four hundred forty thousand, five hundred twenty-three".