2053530306 has 56 divisors (see below), whose sum is σ = 4628229804. Its totient is φ = 683043840.

The previous prime is 2053530287. The next prime is 2053530319. The reversal of 2053530306 is 6030353502.

2053530306 is a `hidden beast` number, since 2 + 0 + 5 + 353 + 0 + 306 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2025810081 + 27720225 = 45009^2 + 5265^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 2053530306.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 840046 + ... + 842486.

Almost surely, 2^2053530306 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2053530306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2314114902).

2053530306 is an abundant number, since it is smaller than the sum of its proper divisors (2574699498).

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

2053530306 is an equidigital number, since it uses as much as digits as its factorization.

2053530306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3038 (or 3023 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 27.

The square root of 2053530306 is about 45315.8946287062. The cubic root of 2053530306 is about 1271.0628888993.

Adding to 2053530306 its reverse (6030353502), we get a palindrome (8083883808).

The spelling of 2053530306 in words is "two billion, fifty-three million, five hundred thirty thousand, three hundred six".