455978 has 4 divisors (see below), whose sum is σ = 683970. Its totient is φ = 227988.

The previous prime is 455977. The next prime is 455989. The reversal of 455978 is 879554.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 351649 + 104329 = 593^2 + 323^2 .

It is a Curzon number.

It is a nialpdrome in base 9.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 455978.

It is not an unprimeable number, because it can be changed into a prime (455977) 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 as a sum of consecutive naturals, namely, 113993 + ... + 113996.

2⁴⁵⁵⁹⁷⁸ is an apocalyptic number.

455978 is a deficient number, since it is larger than the sum of its proper divisors (227992).

455978 is a wasteful number, since it uses less digits than its factorization.

455978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227991.

The product of its digits is 50400, while the sum is 38.

The square root of 455978 is about 675.2614308547. The cubic root of 455978 is about 76.9687847836.

The spelling of 455978 in words is "four hundred fifty-five thousand, nine hundred seventy-eight".