8953372521 has 12 divisors (see below), whose sum is σ = 13176662148. Its totient is φ = 5856293664.

The previous prime is 8953372513. The next prime is 8953372567. The reversal of 8953372521 is 1252733598.

8953372521 is a `hidden beast` number, since 8 + 9 + 53 + 3 + 72 + 521 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5384624400 + 3568748121 = 73380^2 + 59739^2 .

It is not a de Polignac number, because 8953372521 - 2³ = 8953372513 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (8953372511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9384610 + ... + 9385563.

It is an arithmetic number, because the mean of its divisors is an integer number (1098055179).

Almost surely, 2^8953372521 is an apocalyptic number.

It is an amenable number.

8953372521 is a deficient number, since it is larger than the sum of its proper divisors (4223289627).

8953372521 is a wasteful number, since it uses less digits than its factorization.

8953372521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18770232 (or 18770229 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 8953372521 is about 94622.2622906470. The cubic root of 8953372521 is about 2076.4854140449.

The spelling of 8953372521 in words is "eight billion, nine hundred fifty-three million, three hundred seventy-two thousand, five hundred twenty-one".