4555890 has 48 divisors (see below), whose sum is σ = 11950848. Its totient is φ = 1204128.

The previous prime is 4555883. The next prime is 4555891. The reversal of 4555890 is 985554.

It is a happy number.

It is a super-2 number, since 2×4555890² = 41512267384200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4555891) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19957 + ... + 20183.

It is an arithmetic number, because the mean of its divisors is an integer number (248976).

Almost surely, 2^4555890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4555890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5975424).

4555890 is an abundant number, since it is smaller than the sum of its proper divisors (7394958).

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

4555890 is a wasteful number, since it uses less digits than its factorization.

4555890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 4555890 is about 2134.4530915436. The cubic root of 4555890 is about 165.7770510643. Note that the first 3 decimals are identical.

It can be divided in two parts, 4555 and 890, that added together give a palindrome (5445).

The spelling of 4555890 in words is "four million, five hundred fifty-five thousand, eight hundred ninety".