4566021 has 16 divisors (see below), whose sum is σ = 6504960. Its totient is φ = 2842560.

The previous prime is 4566019. The next prime is 4566043. The reversal of 4566021 is 1206654.

It is not a de Polignac number, because 4566021 - 2¹ = 4566019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4565982 and 4566000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4566071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1851 + ... + 3543.

It is an arithmetic number, because the mean of its divisors is an integer number (406560).

Almost surely, 2^4566021 is an apocalyptic number.

It is an amenable number.

4566021 is a deficient number, since it is larger than the sum of its proper divisors (1938939).

4566021 is a wasteful number, since it uses less digits than its factorization.

4566021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 4566021 is about 2136.8249811344. The cubic root of 4566021 is about 165.8998403868.

It can be divided in two parts, 45 and 66021, that added together give a palindrome (66066).

The spelling of 4566021 in words is "four million, five hundred sixty-six thousand, twenty-one".