14515421 has 4 divisors (see below), whose sum is σ = 14648700. Its totient is φ = 14382144.

The previous prime is 14515367. The next prime is 14515451. The reversal of 14515421 is 12451541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12451541 = 2441 ⋅5101.

It can be written as a sum of positive squares in 2 ways, for example, as 8702500 + 5812921 = 2950^2 + 2411^2 .

It is a cyclic number.

It is not a de Polignac number, because 14515421 - 2²² = 10321117 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 (14515451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66476 + ... + 66693.

It is an arithmetic number, because the mean of its divisors is an integer number (3662175).

Almost surely, 2^14515421 is an apocalyptic number.

It is an amenable number.

14515421 is a deficient number, since it is larger than the sum of its proper divisors (133279).

14515421 is a wasteful number, since it uses less digits than its factorization.

14515421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133278.

The product of its digits is 800, while the sum is 23.

The square root of 14515421 is about 3809.9108913464. The cubic root of 14515421 is about 243.9363636341.

Adding to 14515421 its reverse (12451541), we get a palindrome (26966962).

The spelling of 14515421 in words is "fourteen million, five hundred fifteen thousand, four hundred twenty-one".