8529012491 has 4 divisors (see below), whose sum is σ = 8823116400. Its totient is φ = 8234908584.

The previous prime is 8529012473. The next prime is 8529012509. The reversal of 8529012491 is 1942109258.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (8529012473) and next prime (8529012509).

It is a cyclic number.

It is not a de Polignac number, because 8529012491 - 2¹⁰ = 8529011467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8529012091) 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, 147051911 + ... + 147051968.

It is an arithmetic number, because the mean of its divisors is an integer number (2205779100).

Almost surely, 2^8529012491 is an apocalyptic number.

8529012491 is a deficient number, since it is larger than the sum of its proper divisors (294103909).

8529012491 is a wasteful number, since it uses less digits than its factorization.

8529012491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294103908.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 8529012491 is about 92352.6528638999. The cubic root of 8529012491 is about 2043.1468550025.

The spelling of 8529012491 in words is "eight billion, five hundred twenty-nine million, twelve thousand, four hundred ninety-one".