254066021 has 4 divisors (see below), whose sum is σ = 277162944. Its totient is φ = 230969100.

The previous prime is 254066011. The next prime is 254066051. The reversal of 254066021 is 120660452.

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 254066021 - 2⁶ = 254065957 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 (254066011) 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, 11548445 + ... + 11548466.

It is an arithmetic number, because the mean of its divisors is an integer number (69290736).

Almost surely, 2^254066021 is an apocalyptic number.

It is an amenable number.

254066021 is a deficient number, since it is larger than the sum of its proper divisors (23096923).

254066021 is a wasteful number, since it uses less digits than its factorization.

254066021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23096922.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 254066021 is about 15939.4485789189. The cubic root of 254066021 is about 633.3574188132.

The spelling of 254066021 in words is "two hundred fifty-four million, sixty-six thousand, twenty-one".