2560021533 has 12 divisors (see below), whose sum is σ = 3699563868. Its totient is φ = 1705871040.

The previous prime is 2560021531. The next prime is 2560021537. The reversal of 2560021533 is 3351200652.

2560021533 is a `hidden beast` number, since 2 + 5 + 600 + 2 + 1 + 53 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2494702809 + 65318724 = 49947^2 + 8082^2 .

It is not a de Polignac number, because 2560021533 - 2¹ = 2560021531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2560021497 and 2560021506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2560021531) 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, 47160 + ... + 85697.

It is an arithmetic number, because the mean of its divisors is an integer number (308296989).

Almost surely, 2^2560021533 is an apocalyptic number.

It is an amenable number.

2560021533 is a deficient number, since it is larger than the sum of its proper divisors (1139542335).

2560021533 is a wasteful number, since it uses less digits than its factorization.

2560021533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135004 (or 135001 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 2560021533 is about 50596.6553538868. The cubic root of 2560021533 is about 1367.9845928423.

The spelling of 2560021533 in words is "two billion, five hundred sixty million, twenty-one thousand, five hundred thirty-three".