457491 has 8 divisors (see below), whose sum is σ = 618640. Its totient is φ = 300672.

The previous prime is 457469. The next prime is 457507. The reversal of 457491 is 194754.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 457491 - 2⁵ = 457459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (457411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 826 + ... + 1263.

It is an arithmetic number, because the mean of its divisors is an integer number (77330).

2⁴⁵⁷⁴⁹¹ is an apocalyptic number.

457491 is a deficient number, since it is larger than the sum of its proper divisors (161149).

457491 is a wasteful number, since it uses less digits than its factorization.

457491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165.

The product of its digits is 5040, while the sum is 30.

The square root of 457491 is about 676.3808098993. The cubic root of 457491 is about 77.0538219308.

The spelling of 457491 in words is "four hundred fifty-seven thousand, four hundred ninety-one".