60021 has 24 divisors (see below), whose sum is σ = 101920. Its totient is φ = 34992.

The previous prime is 60017. The next prime is 60029. The reversal of 60021 is 12006.

It is not a de Polignac number, because 60021 - 2² = 60017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 59985 and 60012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60029) 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, 3150 + ... + 3168.

2⁶⁰⁰²¹ is an apocalyptic number.

It is an amenable number.

60021 is a deficient number, since it is larger than the sum of its proper divisors (41899).

60021 is a wasteful number, since it uses less digits than its factorization.

60021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47 (or 35 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 60021 is about 244.9918365987. The cubic root of 60021 is about 39.1532432245.

Adding to 60021 its reverse (12006), we get a palindrome (72027).

The spelling of 60021 in words is "sixty thousand, twenty-one".