1053111440 has 40 divisors (see below), whose sum is σ = 2449952568. Its totient is φ = 420992000.

The previous prime is 1053111421. The next prime is 1053111467. The reversal of 1053111440 is 441113501.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 108409744 + 944701696 = 10412^2 + 30736^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1053111440² = 2218087410117747200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 188690 + ... + 194190.

Almost surely, 2^1053111440 is an apocalyptic number.

1053111440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1053111440 is an abundant number, since it is smaller than the sum of its proper divisors (1396841128).

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

1053111440 is a wasteful number, since it uses less digits than its factorization.

1053111440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7907 (or 7901 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1053111440 is about 32451.6785390217. The cubic root of 1053111440 is about 1017.3993211542.

Adding to 1053111440 its reverse (441113501), we get a palindrome (1494224941).

The spelling of 1053111440 in words is "one billion, fifty-three million, one hundred eleven thousand, four hundred forty".