14378521 has 2 divisors, whose sum is σ = 14378522. Its totient is φ = 14378520.

The previous prime is 14378503. The next prime is 14378527. The reversal of 14378521 is 12587341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8785296 + 5593225 = 2964^2 + 2365^2 .

It is a cyclic number.

It is not a de Polignac number, because 14378521 - 2¹⁷ = 14247449 is a prime.

It is a super-2 number, since 2×14378521² = 413483732294882, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (14378527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7189260 + 7189261.

It is an arithmetic number, because the mean of its divisors is an integer number (7189261).

Almost surely, 2^14378521 is an apocalyptic number.

It is an amenable number.

14378521 is a deficient number, since it is larger than the sum of its proper divisors (1).

14378521 is an equidigital number, since it uses as much as digits as its factorization.

14378521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 31.

The square root of 14378521 is about 3791.9020293251. The cubic root of 14378521 is about 243.1670570225.

The spelling of 14378521 in words is "fourteen million, three hundred seventy-eight thousand, five hundred twenty-one".