224901749 has 2 divisors, whose sum is σ = 224901750. Its totient is φ = 224901748.

The previous prime is 224901679. The next prime is 224901763. The reversal of 224901749 is 947109422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178756900 + 46144849 = 13370^2 + 6793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224901749 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224901049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112450874 + 112450875.

It is an arithmetic number, because the mean of its divisors is an integer number (112450875).

Almost surely, 2^224901749 is an apocalyptic number.

It is an amenable number.

224901749 is a deficient number, since it is larger than the sum of its proper divisors (1).

224901749 is an equidigital number, since it uses as much as digits as its factorization.

224901749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 224901749 is about 14996.7246090605. The cubic root of 224901749 is about 608.1316559378.

The spelling of 224901749 in words is "two hundred twenty-four million, nine hundred one thousand, seven hundred forty-nine".