455490 has 64 divisors (see below), whose sum is σ = 1393920. Its totient is φ = 103680.

The previous prime is 455489. The next prime is 455491. The reversal of 455490 is 94554.

It is an interprime number because it is at equal distance from previous prime (455489) and next prime (455491).

It is a super-2 number, since 2×455490² = 414942280200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (455491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1770 + ... + 2010.

It is an arithmetic number, because the mean of its divisors is an integer number (21780).

2⁴⁵⁵⁴⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 455490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (696960).

455490 is an abundant number, since it is smaller than the sum of its proper divisors (938430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

455490 is a wasteful number, since it uses less digits than its factorization.

455490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 455490 is about 674.8999925915. The cubic root of 455490 is about 76.9413169566.

The spelling of 455490 in words is "four hundred fifty-five thousand, four hundred ninety".