253724213 has 2 divisors, whose sum is σ = 253724214. Its totient is φ = 253724212.

The previous prime is 253724147. The next prime is 253724227. The reversal of 253724213 is 312427352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228553924 + 25170289 = 15118^2 + 5017^2 .

It is a cyclic number.

It is not a de Polignac number, because 253724213 - 2⁸ = 253723957 is a prime.

It is a Sophie Germain 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 (253724413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126862106 + 126862107.

It is an arithmetic number, because the mean of its divisors is an integer number (126862107).

Almost surely, 2^253724213 is an apocalyptic number.

It is an amenable number.

253724213 is a deficient number, since it is larger than the sum of its proper divisors (1).

253724213 is an equidigital number, since it uses as much as digits as its factorization.

253724213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 29.

The square root of 253724213 is about 15928.7228929378. The cubic root of 253724213 is about 633.0732619788.

The spelling of 253724213 in words is "two hundred fifty-three million, seven hundred twenty-four thousand, two hundred thirteen".