254445421 has 4 divisors (see below), whose sum is σ = 259246332. Its totient is φ = 249644512.

The previous prime is 254445413. The next prime is 254445463. The reversal of 254445421 is 124544452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 213306025 + 41139396 = 14605^2 + 6414^2 .

It is a cyclic number.

It is not a de Polignac number, because 254445421 - 2³ = 254445413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254442421) 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, 2400376 + ... + 2400481.

It is an arithmetic number, because the mean of its divisors is an integer number (64811583).

Almost surely, 2^254445421 is an apocalyptic number.

It is an amenable number.

254445421 is a deficient number, since it is larger than the sum of its proper divisors (4800911).

254445421 is an equidigital number, since it uses as much as digits as its factorization.

254445421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4800910.

The product of its digits is 25600, while the sum is 31.

The square root of 254445421 is about 15951.3454291480. The cubic root of 254445421 is about 633.6725288918.

Adding to 254445421 its reverse (124544452), we get a palindrome (378989873).

The spelling of 254445421 in words is "two hundred fifty-four million, four hundred forty-five thousand, four hundred twenty-one".