14621561 has 2 divisors, whose sum is σ = 14621562. Its totient is φ = 14621560.

The previous prime is 14621533. The next prime is 14621569. The reversal of 14621561 is 16512641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10601536 + 4020025 = 3256^2 + 2005^2 .

It is an emirp because it is prime and its reverse (16512641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14621561 - 2¹⁰ = 14620537 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 14621561.

It is not a weakly prime, because it can be changed into another prime (14621569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7310780 + 7310781.

It is an arithmetic number, because the mean of its divisors is an integer number (7310781).

Almost surely, 2^14621561 is an apocalyptic number.

It is an amenable number.

14621561 is a deficient number, since it is larger than the sum of its proper divisors (1).

14621561 is an equidigital number, since it uses as much as digits as its factorization.

14621561 is an evil number, because the sum of its binary digits is even.

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

The square root of 14621561 is about 3823.8149798336. The cubic root of 14621561 is about 244.5294926667.

The spelling of 14621561 in words is "fourteen million, six hundred twenty-one thousand, five hundred sixty-one".