2056513521 has 8 divisors (see below), whose sum is σ = 2749178880. Its totient is φ = 1367428592.

The previous prime is 2056513519. The next prime is 2056513549. The reversal of 2056513521 is 1253156502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2056513521 - 2¹ = 2056513519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2056517521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 893766 + ... + 896063.

It is an arithmetic number, because the mean of its divisors is an integer number (343647360).

Almost surely, 2^2056513521 is an apocalyptic number.

It is an amenable number.

2056513521 is a deficient number, since it is larger than the sum of its proper divisors (692665359).

2056513521 is a wasteful number, since it uses less digits than its factorization.

2056513521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790215.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 2056513521 is about 45348.7984515577. The cubic root of 2056513521 is about 1271.6780927383.

The spelling of 2056513521 in words is "two billion, fifty-six million, five hundred thirteen thousand, five hundred twenty-one".