63021 has 8 divisors (see below), whose sum is σ = 96064. Its totient is φ = 36000.

The previous prime is 62989. The next prime is 63029. The reversal of 63021 is 12036.

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

It is not a de Polignac number, because 63021 - 2⁵ = 62989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 62988 and 63006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63029) 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, 1480 + ... + 1521.

It is an arithmetic number, because the mean of its divisors is an integer number (12008).

2⁶³⁰²¹ is an apocalyptic number.

It is an amenable number.

63021 is a deficient number, since it is larger than the sum of its proper divisors (33043).

63021 is a wasteful number, since it uses less digits than its factorization.

63021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3011.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 63021 is about 251.0398374760. The cubic root of 63021 is about 39.7949927625.

Adding to 63021 its reverse (12036), we get a palindrome (75057).

The spelling of 63021 in words is "sixty-three thousand, twenty-one".