8531295421 has 8 divisors (see below), whose sum is σ = 9308132064. Its totient is φ = 7754669520.

The previous prime is 8531295413. The next prime is 8531295427. The reversal of 8531295421 is 1245921358.

It is a happy number.

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 8531295421 - 2³ = 8531295413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8531295427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38895 + ... + 136291.

It is an arithmetic number, because the mean of its divisors is an integer number (1163516508).

Almost surely, 2^8531295421 is an apocalyptic number.

It is an amenable number.

8531295421 is a deficient number, since it is larger than the sum of its proper divisors (776836643).

8531295421 is a wasteful number, since it uses less digits than its factorization.

8531295421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105371.

The product of its digits is 86400, while the sum is 40.

The square root of 8531295421 is about 92365.0118876190. The cubic root of 8531295421 is about 2043.3291326559.

The spelling of 8531295421 in words is "eight billion, five hundred thirty-one million, two hundred ninety-five thousand, four hundred twenty-one".