1053221640 has 64 divisors (see below), whose sum is σ = 3166128000. Its totient is φ = 280284672.

The previous prime is 1053221633. The next prime is 1053221647. The reversal of 1053221640 is 461223501.

1053221640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1053221633) and next prime (1053221647).

It is a super-2 number, since 2×1053221640² = 2218551645928579200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1053221640.

It is not an unprimeable number, because it can be changed into a prime (1053221647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51636 + ... + 69084.

It is an arithmetic number, because the mean of its divisors is an integer number (49470750).

Almost surely, 2^1053221640 is an apocalyptic number.

1053221640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1053221640 is an abundant number, since it is smaller than the sum of its proper divisors (2112906360).

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

1053221640 is a wasteful number, since it uses less digits than its factorization.

1053221640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17966 (or 17962 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1053221640 is about 32453.3764036964. The cubic root of 1053221640 is about 1017.4348075837.

The spelling of 1053221640 in words is "one billion, fifty-three million, two hundred twenty-one thousand, six hundred forty".