254544221 has 2 divisors, whose sum is σ = 254544222. Its totient is φ = 254544220.

The previous prime is 254544217. The next prime is 254544229. The reversal of 254544221 is 122445452.

254544221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234518596 + 20025625 = 15314^2 + 4475^2 .

It is a cyclic number.

It is not a de Polignac number, because 254544221 - 2² = 254544217 is a prime.

It is equal to p_13914227 and since 254544221 and 13914227 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254544229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127272110 + 127272111.

It is an arithmetic number, because the mean of its divisors is an integer number (127272111).

Almost surely, 2^254544221 is an apocalyptic number.

It is an amenable number.

254544221 is a deficient number, since it is larger than the sum of its proper divisors (1).

254544221 is an equidigital number, since it uses as much as digits as its factorization.

254544221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12800, while the sum is 29.

The square root of 254544221 is about 15954.4420460259. The cubic root of 254544221 is about 633.7545356657.

Adding to 254544221 its reverse (122445452), we get a palindrome (376989673).

The spelling of 254544221 in words is "two hundred fifty-four million, five hundred forty-four thousand, two hundred twenty-one".