1053331220 has 24 divisors (see below), whose sum is σ = 2342113704. Its totient is φ = 396548096.

The previous prime is 1053331211. The next prime is 1053331247. The reversal of 1053331220 is 221333501.

1053331220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 29203216 + 1024128004 = 5404^2 + 32002^2 .

It is a super-2 number, since 2×1053331220² = 2219013318053376800, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 1053331192 and 1053331201.

It is a congruent 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, 1548677 + ... + 1549356.

It is an arithmetic number, because the mean of its divisors is an integer number (97588071).

Almost surely, 2^1053331220 is an apocalyptic number.

1053331220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1053331220 is an abundant number, since it is smaller than the sum of its proper divisors (1288782484).

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

1053331220 is a wasteful number, since it uses less digits than its factorization.

1053331220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3098059 (or 3098057 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 1053331220 is about 32455.0646278820. The cubic root of 1053331220 is about 1017.4700919075.

Adding to 1053331220 its reverse (221333501), we get a palindrome (1274664721).

The spelling of 1053331220 in words is "one billion, fifty-three million, three hundred thirty-one thousand, two hundred twenty".