14540921 has 4 divisors (see below), whose sum is σ = 14815332. Its totient is φ = 14266512.

The previous prime is 14540917. The next prime is 14540941. The reversal of 14540921 is 12904541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12524521 + 2016400 = 3539^2 + 1420^2 .

It is a cyclic number.

It is not a de Polignac number, because 14540921 - 2² = 14540917 is a prime.

It is a super-2 number, since 2×14540921² = 422876767056482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14540941) 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, 137126 + ... + 137231.

It is an arithmetic number, because the mean of its divisors is an integer number (3703833).

Almost surely, 2^14540921 is an apocalyptic number.

It is an amenable number.

14540921 is a deficient number, since it is larger than the sum of its proper divisors (274411).

14540921 is an equidigital number, since it uses as much as digits as its factorization.

14540921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274410.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 14540921 is about 3813.2559578397. The cubic root of 14540921 is about 244.0791253280.

The spelling of 14540921 in words is "fourteen million, five hundred forty thousand, nine hundred twenty-one".