254221013 has 2 divisors, whose sum is σ = 254221014. Its totient is φ = 254221012.

The previous prime is 254220997. The next prime is 254221061. The reversal of 254221013 is 310122452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175774564 + 78446449 = 13258^2 + 8857^2 .

It is a cyclic number.

It is not a de Polignac number, because 254221013 - 2⁴ = 254220997 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 (254221313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127110506 + 127110507.

It is an arithmetic number, because the mean of its divisors is an integer number (127110507).

Almost surely, 2^254221013 is an apocalyptic number.

It is an amenable number.

254221013 is a deficient number, since it is larger than the sum of its proper divisors (1).

254221013 is an equidigital number, since it uses as much as digits as its factorization.

254221013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 254221013 is about 15944.3097373326. The cubic root of 254221013 is about 633.4861850523.

Adding to 254221013 its reverse (310122452), we get a palindrome (564343465).

The spelling of 254221013 in words is "two hundred fifty-four million, two hundred twenty-one thousand, thirteen".