224965561 has 2 divisors, whose sum is σ = 224965562. Its totient is φ = 224965560.

The previous prime is 224965541. The next prime is 224965571. The reversal of 224965561 is 165569422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191545600 + 33419961 = 13840^2 + 5781^2 .

It is a cyclic number.

It is not a de Polignac number, because 224965561 - 2¹⁵ = 224932793 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (224965541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112482780 + 112482781.

It is an arithmetic number, because the mean of its divisors is an integer number (112482781).

Almost surely, 2^224965561 is an apocalyptic number.

It is an amenable number.

224965561 is a deficient number, since it is larger than the sum of its proper divisors (1).

224965561 is an equidigital number, since it uses as much as digits as its factorization.

224965561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 40.

The square root of 224965561 is about 14998.8519894024. The cubic root of 224965561 is about 608.1891661288.

The spelling of 224965561 in words is "two hundred twenty-four million, nine hundred sixty-five thousand, five hundred sixty-one".