2570561521 has 4 divisors (see below), whose sum is σ = 2804248944. Its totient is φ = 2336874100.

The previous prime is 2570561519. The next prime is 2570561527. The reversal of 2570561521 is 1251650752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2570561521 - 2¹ = 2570561519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2570561527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116843695 + ... + 116843716.

It is an arithmetic number, because the mean of its divisors is an integer number (701062236).

Almost surely, 2^2570561521 is an apocalyptic number.

It is an amenable number.

2570561521 is a deficient number, since it is larger than the sum of its proper divisors (233687423).

2570561521 is a wasteful number, since it uses less digits than its factorization.

2570561521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233687422.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 2570561521 is about 50700.7053303995. The cubic root of 2570561521 is about 1369.8594206366.

The spelling of 2570561521 in words is "two billion, five hundred seventy million, five hundred sixty-one thousand, five hundred twenty-one".