1053440 has 36 divisors (see below), whose sum is σ = 2526384. Its totient is φ = 420864.

The previous prime is 1053421. The next prime is 1053449. The reversal of 1053440 is 443501.

It is a super-2 number, since 2×1053440² = 2219471667200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1053449) 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, 869 + ... + 1691.

2^1053440 is an apocalyptic number.

1053440 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 1053440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1263192).

1053440 is an abundant number, since it is smaller than the sum of its proper divisors (1472944).

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

1053440 is an frugal number, since it uses more digits than its factorization.

1053440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844 (or 830 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1053440 is about 1026.3722521581. The cubic root of 1053440 is about 101.7505116214.

Adding to 1053440 its reverse (443501), we get a palindrome (1496941).

The spelling of 1053440 in words is "one million, fifty-three thousand, four hundred forty".