1105253440 has 56 divisors (see below), whose sum is σ = 2671218432. Its totient is φ = 435494400.

The previous prime is 1105253437. The next prime is 1105253489. The reversal of 1105253440 is 443525011.

It is a happy 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, 4336 + ... + 47215.

Almost surely, 2^1105253440 is an apocalyptic number.

1105253440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1105253440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1335609216).

1105253440 is an abundant number, since it is smaller than the sum of its proper divisors (1565964992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1105253440 is an equidigital number, since it uses as much as digits as its factorization.

1105253440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51635 (or 51625 counting only the distinct ones).

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

The square root of 1105253440 is about 33245.3521563541. The cubic root of 1105253440 is about 1033.9208461520.

Adding to 1105253440 its reverse (443525011), we get a palindrome (1548778451).

The spelling of 1105253440 in words is "one billion, one hundred five million, two hundred fifty-three thousand, four hundred forty".