254242221 has 4 divisors (see below), whose sum is σ = 338989632. Its totient is φ = 169494812.

The previous prime is 254242169. The next prime is 254242229. The reversal of 254242221 is 122242452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 254242221 - 2⁹ = 254241709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 254242191 and 254242200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254242229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42373701 + ... + 42373706.

It is an arithmetic number, because the mean of its divisors is an integer number (84747408).

Almost surely, 2^254242221 is an apocalyptic number.

It is an amenable number.

254242221 is a deficient number, since it is larger than the sum of its proper divisors (84747411).

254242221 is an equidigital number, since it uses as much as digits as its factorization.

254242221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84747410.

The product of its digits is 2560, while the sum is 24.

The square root of 254242221 is about 15944.9747883150. The cubic root of 254242221 is about 633.5038004351.

Adding to 254242221 its reverse (122242452), we get a palindrome (376484673).

The spelling of 254242221 in words is "two hundred fifty-four million, two hundred forty-two thousand, two hundred twenty-one".