814257481 has 8 divisors (see below), whose sum is σ = 823042944. Its totient is φ = 805494000.

The previous prime is 814257467. The next prime is 814257487. The reversal of 814257481 is 184752418.

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 814257481 - 2⁹ = 814256969 is a prime.

It is a super-2 number, since 2×814257481² = 1326030490728930722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (814257487) 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, 75291 + ... + 85423.

It is an arithmetic number, because the mean of its divisors is an integer number (102880368).

Almost surely, 2^814257481 is an apocalyptic number.

It is an amenable number.

814257481 is a deficient number, since it is larger than the sum of its proper divisors (8785463).

814257481 is a wasteful number, since it uses less digits than its factorization.

814257481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10991.

The product of its digits is 71680, while the sum is 40.

The square root of 814257481 is about 28535.1972307885. The cubic root of 814257481 is about 933.8001064731.

The spelling of 814257481 in words is "eight hundred fourteen million, two hundred fifty-seven thousand, four hundred eighty-one".