254221945 has 8 divisors (see below), whose sum is σ = 308742336. Its totient is φ = 200926896.

The previous prime is 254221937. The next prime is 254221987. The reversal of 254221945 is 549122452.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 254221945 - 2³ = 254221937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 254221945.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305877 + ... + 306706.

It is an arithmetic number, because the mean of its divisors is an integer number (38592792).

Almost surely, 2^254221945 is an apocalyptic number.

It is an amenable number.

254221945 is a deficient number, since it is larger than the sum of its proper divisors (54520391).

254221945 is an equidigital number, since it uses as much as digits as its factorization.

254221945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612671.

The product of its digits is 28800, while the sum is 34.

The square root of 254221945 is about 15944.3389640336. The cubic root of 254221945 is about 633.4869591928.

The spelling of 254221945 in words is "two hundred fifty-four million, two hundred twenty-one thousand, nine hundred forty-five".