8481257 has 8 divisors (see below), whose sum is σ = 8669832. Its totient is φ = 8294400.

The previous prime is 8481247. The next prime is 8481269. The reversal of 8481257 is 7521848.

It can be written as a sum of positive squares in 4 ways, for example, as 1104601 + 7376656 = 1051^2 + 2716^2 .

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 8481257 - 2¹⁰ = 8480233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8481247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15407 + ... + 15947.

It is an arithmetic number, because the mean of its divisors is an integer number (1083729).

Almost surely, 2^8481257 is an apocalyptic number.

It is an amenable number.

8481257 is a deficient number, since it is larger than the sum of its proper divisors (188575).

8481257 is a wasteful number, since it uses less digits than its factorization.

8481257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859.

The product of its digits is 17920, while the sum is 35.

The square root of 8481257 is about 2912.2597755008. The cubic root of 8481257 is about 203.9326398775.

The spelling of 8481257 in words is "eight million, four hundred eighty-one thousand, two hundred fifty-seven".