14513821 has 4 divisors (see below), whose sum is σ = 16587232. Its totient is φ = 12440412.

The previous prime is 14513809. The next prime is 14513831. The reversal of 14513821 is 12831541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 14513821 - 2⁵ = 14513789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14513831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1036695 + ... + 1036708.

It is an arithmetic number, because the mean of its divisors is an integer number (4146808).

Almost surely, 2^14513821 is an apocalyptic number.

It is an amenable number.

14513821 is a deficient number, since it is larger than the sum of its proper divisors (2073411).

14513821 is an equidigital number, since it uses as much as digits as its factorization.

14513821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2073410.

The product of its digits is 960, while the sum is 25.

The square root of 14513821 is about 3809.7009068954. The cubic root of 14513821 is about 243.9274004649.

The spelling of 14513821 in words is "fourteen million, five hundred thirteen thousand, eight hundred twenty-one".