2521571216 has 20 divisors (see below), whose sum is σ = 4893115392. Its totient is φ = 1258831776.

The previous prime is 2521571207. The next prime is 2521571219. The reversal of 2521571216 is 6121751252.

It is not an unprimeable number, because it can be changed into a prime (2521571219) 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, 111440 + ... + 132143.

Almost surely, 2^2521571216 is an apocalyptic number.

It is an amenable number.

2521571216 is a deficient number, since it is larger than the sum of its proper divisors (2371544176).

2521571216 is a wasteful number, since it uses less digits than its factorization.

2521571216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244238 (or 244232 counting only the distinct ones).

The product of its digits is 8400, while the sum is 32.

The square root of 2521571216 is about 50215.2488393715. The cubic root of 2521571216 is about 1361.1011871401.

The spelling of 2521571216 in words is "two billion, five hundred twenty-one million, five hundred seventy-one thousand, two hundred sixteen".