8521875400 has 24 divisors (see below), whose sum is σ = 19813360770. Its totient is φ = 3408750080.

The previous prime is 8521875367. The next prime is 8521875419. The reversal of 8521875400 is 45781258.

It can be written as a sum of positive squares in 3 ways, for example, as 3322600164 + 5199275236 = 57642^2 + 72106^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21304489 + ... + 21304888.

Almost surely, 2^8521875400 is an apocalyptic number.

It is an amenable number.

8521875400 is an abundant number, since it is smaller than the sum of its proper divisors (11291485370).

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

8521875400 is a wasteful number, since it uses less digits than its factorization.

8521875400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42609393 (or 42609384 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 40.

The square root of 8521875400 is about 92314.0043547023. The cubic root of 8521875400 is about 2042.5767931348.

The spelling of 8521875400 in words is "eight billion, five hundred twenty-one million, eight hundred seventy-five thousand, four hundred".