8535421 has 8 divisors (see below), whose sum is σ = 8782200. Its totient is φ = 8290560.

The previous prime is 8535413. The next prime is 8535431. The reversal of 8535421 is 1245358.

It can be written as a sum of positive squares in 4 ways, for example, as 2134521 + 6400900 = 1461^2 + 2530^2 .

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 8535421 - 2³ = 8535413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8535421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8535431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16515 + ... + 17023.

It is an arithmetic number, because the mean of its divisors is an integer number (1097775).

Almost surely, 2^8535421 is an apocalyptic number.

It is an amenable number.

8535421 is a deficient number, since it is larger than the sum of its proper divisors (246779).

8535421 is a wasteful number, since it uses less digits than its factorization.

8535421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959.

The product of its digits is 4800, while the sum is 28.

The square root of 8535421 is about 2921.5442834227. The cubic root of 8535421 is about 204.3658451822.

The spelling of 8535421 in words is "eight million, five hundred thirty-five thousand, four hundred twenty-one".