14918521 has 4 divisors (see below), whose sum is σ = 14937472. Its totient is φ = 14899572.

The previous prime is 14918509. The next prime is 14918543. The reversal of 14918521 is 12581941.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12581941 = 1319 ⋅9539.

It is a cyclic number.

It is not a de Polignac number, because 14918521 - 2¹⁷ = 14787449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14918551) 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, 8241 + ... + 9886.

It is an arithmetic number, because the mean of its divisors is an integer number (3734368).

Almost surely, 2^14918521 is an apocalyptic number.

It is an amenable number.

14918521 is a deficient number, since it is larger than the sum of its proper divisors (18951).

14918521 is an equidigital number, since it uses as much as digits as its factorization.

14918521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18950.

The product of its digits is 2880, while the sum is 31.

The square root of 14918521 is about 3862.4501291279. The cubic root of 14918521 is about 246.1738531339.

The spelling of 14918521 in words is "fourteen million, nine hundred eighteen thousand, five hundred twenty-one".