20224541 has 2 divisors, whose sum is σ = 20224542. Its totient is φ = 20224540.

The previous prime is 20224537. The next prime is 20224549. The reversal of 20224541 is 14542202.

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., 20025625 + 198916 = 4475^2 + 446^2 .

It is a cyclic number.

It is not a de Polignac number, because 20224541 - 2² = 20224537 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20224549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10112270 + 10112271.

It is an arithmetic number, because the mean of its divisors is an integer number (10112271).

Almost surely, 2^20224541 is an apocalyptic number.

It is an amenable number.

20224541 is a deficient number, since it is larger than the sum of its proper divisors (1).

20224541 is an equidigital number, since it uses as much as digits as its factorization.

20224541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 20224541 is about 4497.1703325536. The cubic root of 20224541 is about 272.4538136800.

Adding to 20224541 its reverse (14542202), we get a palindrome (34766743).

The spelling of 20224541 in words is "twenty million, two hundred twenty-four thousand, five hundred forty-one".