14578981 has 2 divisors, whose sum is σ = 14578982. Its totient is φ = 14578980.

The previous prime is 14578969. The next prime is 14578997. The reversal of 14578981 is 18987541.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14130081 + 448900 = 3759^2 + 670^2 .

It is an emirp because it is prime and its reverse (18987541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14578981 - 2⁷ = 14578853 is a prime.

It is a super-2 number, since 2×14578981² = 425093373996722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14578901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7289490 + 7289491.

It is an arithmetic number, because the mean of its divisors is an integer number (7289491).

Almost surely, 2^14578981 is an apocalyptic number.

It is an amenable number.

14578981 is a deficient number, since it is larger than the sum of its proper divisors (1).

14578981 is an equidigital number, since it uses as much as digits as its factorization.

14578981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 43.

The square root of 14578981 is about 3818.2431824073. The cubic root of 14578981 is about 244.2918940203.

The spelling of 14578981 in words is "fourteen million, five hundred seventy-eight thousand, nine hundred eighty-one".