8521493562 has 12 divisors (see below), whose sum is σ = 18463236090. Its totient is φ = 2840497848.

The previous prime is 8521493549. The next prime is 8521493581. The reversal of 8521493562 is 2653941258.

8521493562 is a `hidden beast` number, since 85 + 2 + 1 + 4 + 9 + 3 + 562 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6572182761 + 1949310801 = 81069^2 + 44151^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 236708137 + ... + 236708172.

Almost surely, 2^8521493562 is an apocalyptic number.

8521493562 is an abundant number, since it is smaller than the sum of its proper divisors (9941742528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8521493562 is a wasteful number, since it uses less digits than its factorization.

8521493562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473416317 (or 473416314 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 8521493562 is about 92311.9361837894. The cubic root of 8521493562 is about 2042.5462855666.

The spelling of 8521493562 in words is "eight billion, five hundred twenty-one million, four hundred ninety-three thousand, five hundred sixty-two".