224781541 has 2 divisors, whose sum is σ = 224781542. Its totient is φ = 224781540.

The previous prime is 224781509. The next prime is 224781587. The reversal of 224781541 is 145187422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155725441 + 69056100 = 12479^2 + 8310^2 .

It is a cyclic number.

It is not a de Polignac number, because 224781541 - 2⁵ = 224781509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 224781497 and 224781506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224785541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112390770 + 112390771.

It is an arithmetic number, because the mean of its divisors is an integer number (112390771).

Almost surely, 2^224781541 is an apocalyptic number.

It is an amenable number.

224781541 is a deficient number, since it is larger than the sum of its proper divisors (1).

224781541 is an equidigital number, since it uses as much as digits as its factorization.

224781541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17920, while the sum is 34.

The square root of 224781541 is about 14992.7162649068. The cubic root of 224781541 is about 608.0232896276.

The spelling of 224781541 in words is "two hundred twenty-four million, seven hundred eighty-one thousand, five hundred forty-one".