1053522440 has 48 divisors (see below), whose sum is σ = 2454740100. Its totient is φ = 406450688.

The previous prime is 1053522439. The next prime is 1053522443. The reversal of 1053522440 is 442253501.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 378458116 + 675064324 = 19454^2 + 25982^2 .

It is a super-2 number, since 2×1053522440² = 2219819063167107200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1053522443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1105004 + ... + 1105956.

Almost surely, 2^1053522440 is an apocalyptic number.

1053522440 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 1053522440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1227370050).

1053522440 is an abundant number, since it is smaller than the sum of its proper divisors (1401217660).

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

1053522440 is an frugal number, since it uses more digits than its factorization.

1053522440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946 (or 989 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1053522440 is about 32458.0104134557. The cubic root of 1053522440 is about 1017.5316581255.

Adding to 1053522440 its reverse (442253501), we get a palindrome (1495775941).

The spelling of 1053522440 in words is "one billion, fifty-three million, five hundred twenty-two thousand, four hundred forty".