2560521047 has 4 divisors (see below), whose sum is σ = 2926309776. Its totient is φ = 2194732320.

The previous prime is 2560521031. The next prime is 2560521049. The reversal of 2560521047 is 7401250652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2560521047 - 2⁴ = 2560521031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2560521049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182894354 + ... + 182894367.

It is an arithmetic number, because the mean of its divisors is an integer number (731577444).

Almost surely, 2^2560521047 is an apocalyptic number.

2560521047 is a deficient number, since it is larger than the sum of its proper divisors (365788729).

2560521047 is an equidigital number, since it uses as much as digits as its factorization.

2560521047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365788728.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 2560521047 is about 50601.5913484942. The cubic root of 2560521047 is about 1368.0735612368.

Adding to 2560521047 its reverse (7401250652), we get a palindrome (9961771699).

The spelling of 2560521047 in words is "two billion, five hundred sixty million, five hundred twenty-one thousand, forty-seven".