455981 has 8 divisors (see below), whose sum is σ = 486720. Its totient is φ = 425952.

The previous prime is 455977. The next prime is 455989. The reversal of 455981 is 189554.

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 455981 - 2² = 455977 is a prime.

It is a super-2 number, since 2×455981² = 415837344722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455989) 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, 1841 + ... + 2073.

It is an arithmetic number, because the mean of its divisors is an integer number (60840).

2⁴⁵⁵⁹⁸¹ is an apocalyptic number.

It is an amenable number.

455981 is a deficient number, since it is larger than the sum of its proper divisors (30739).

455981 is a wasteful number, since it uses less digits than its factorization.

455981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355.

The product of its digits is 7200, while the sum is 32.

The square root of 455981 is about 675.2636522130. The cubic root of 455981 is about 76.9689535826.

The spelling of 455981 in words is "four hundred fifty-five thousand, nine hundred eighty-one".