8521240487 has 8 divisors (see below), whose sum is σ = 8714077680. Its totient is φ = 8330117760.

The previous prime is 8521240471. The next prime is 8521240501. The reversal of 8521240487 is 7840421258.

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 8521240487 - 2⁴ = 8521240471 is a prime.

It is a super-2 number, since 2×8521240487² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8521245487) 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, 418562 + ... + 438447.

It is an arithmetic number, because the mean of its divisors is an integer number (1089259710).

Almost surely, 2^8521240487 is an apocalyptic number.

8521240487 is a deficient number, since it is larger than the sum of its proper divisors (192837193).

8521240487 is a wasteful number, since it uses less digits than its factorization.

8521240487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857233.

The product of its (nonzero) digits is 143360, while the sum is 41.

The square root of 8521240487 is about 92310.5654137163. The cubic root of 8521240487 is about 2042.5260652255.

The spelling of 8521240487 in words is "eight billion, five hundred twenty-one million, two hundred forty thousand, four hundred eighty-seven".