4555000021 has 8 divisors (see below), whose sum is σ = 5351328864. Its totient is φ = 3822377520.

The previous prime is 4554999997. The next prime is 4555000027. The reversal of 4555000021 is 1200005554.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4555000021 - 2⁵ = 4554999989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4554999956 and 4555000001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4555000027) 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, 15926431 + ... + 15926716.

It is an arithmetic number, because the mean of its divisors is an integer number (668916108).

Almost surely, 2^4555000021 is an apocalyptic number.

It is an amenable number.

4555000021 is a deficient number, since it is larger than the sum of its proper divisors (796328843).

4555000021 is a wasteful number, since it uses less digits than its factorization.

4555000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31853171.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 4555000021 is about 67490.7402611647. The cubic root of 4555000021 is about 1657.6625568347.

Adding to 4555000021 its reverse (1200005554), we get a palindrome (5755005575).

The spelling of 4555000021 in words is "four billion, five hundred fifty-five million, twenty-one", and thus it is an aban number.