8457481 has 2 divisors, whose sum is σ = 8457482. Its totient is φ = 8457480.

The previous prime is 8457479. The next prime is 8457487. The reversal of 8457481 is 1847548.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4477456 + 3980025 = 2116^2 + 1995^2 .

It is a cyclic number.

It is not a de Polignac number, because 8457481 - 2¹ = 8457479 is a prime.

It is a super-2 number, since 2×8457481² = 143057969730722, which contains 22 as substring.

Together with 8457479, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8457481.

It is not a weakly prime, because it can be changed into another prime (8457487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4228740 + 4228741.

It is an arithmetic number, because the mean of its divisors is an integer number (4228741).

Almost surely, 2^8457481 is an apocalyptic number.

It is an amenable number.

8457481 is a deficient number, since it is larger than the sum of its proper divisors (1).

8457481 is an equidigital number, since it uses as much as digits as its factorization.

8457481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35840, while the sum is 37.

The square root of 8457481 is about 2908.1748571914. The cubic root of 8457481 is about 203.7418961234.

The spelling of 8457481 in words is "eight million, four hundred fifty-seven thousand, four hundred eighty-one".