14915561 has 2 divisors, whose sum is σ = 14915562. Its totient is φ = 14915560.

The previous prime is 14915543. The next prime is 14915567. The reversal of 14915561 is 16551941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13579225 + 1336336 = 3685^2 + 1156^2 .

It is a cyclic number.

It is not a de Polignac number, because 14915561 - 2¹⁴ = 14899177 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (14915567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7457780 + 7457781.

It is an arithmetic number, because the mean of its divisors is an integer number (7457781).

Almost surely, 2^14915561 is an apocalyptic number.

It is an amenable number.

14915561 is a deficient number, since it is larger than the sum of its proper divisors (1).

14915561 is an equidigital number, since it uses as much as digits as its factorization.

14915561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 32.

The square root of 14915561 is about 3862.0669336509. The cubic root of 14915561 is about 246.1575708496.

The spelling of 14915561 in words is "fourteen million, nine hundred fifteen thousand, five hundred sixty-one".