14520021 has 8 divisors (see below), whose sum is σ = 19883424. Its totient is φ = 9418320.

The previous prime is 14520019. The next prime is 14520029. The reversal of 14520021 is 12002541.

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

It is not a de Polignac number, because 14520021 - 2¹ = 14520019 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14520029) 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, 65295 + ... + 65516.

It is an arithmetic number, because the mean of its divisors is an integer number (2485428).

Almost surely, 2^14520021 is an apocalyptic number.

It is an amenable number.

14520021 is a deficient number, since it is larger than the sum of its proper divisors (5363403).

14520021 is a wasteful number, since it uses less digits than its factorization.

14520021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130851.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 14520021 is about 3810.5145321859. The cubic root of 14520021 is about 243.9621290772.

Adding to 14520021 its reverse (12002541), we get a palindrome (26522562).

The spelling of 14520021 in words is "fourteen million, five hundred twenty thousand, twenty-one".