457945 has 8 divisors (see below), whose sum is σ = 558144. Its totient is φ = 360624.

The previous prime is 457943. The next prime is 457979. The reversal of 457945 is 549754.

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 457945 - 2¹ = 457943 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 457945.

It is not an unprimeable number, because it can be changed into a prime (457943) 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, 349 + ... + 1018.

It is an arithmetic number, because the mean of its divisors is an integer number (69768).

2⁴⁵⁷⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

457945 is a deficient number, since it is larger than the sum of its proper divisors (100199).

457945 is a wasteful number, since it uses less digits than its factorization.

457945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439.

The product of its digits is 25200, while the sum is 34.

The square root of 457945 is about 676.7163364365. The cubic root of 457945 is about 77.0793021185.

Subtracting 457945 from its reverse (549754), we obtain a square (91809 = 303²).

It can be divided in two parts, 4579 and 45, that added together give a square (4624 = 68²).

The spelling of 457945 in words is "four hundred fifty-seven thousand, nine hundred forty-five".