254005921 has 8 divisors (see below), whose sum is σ = 273669480. Its totient is φ = 234360192.

The previous prime is 254005903. The next prime is 254005981. The reversal of 254005921 is 129500452.

254005921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1354896 + 252651025 = 1164^2 + 15895^2 .

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 254005921 - 2⁷ = 254005793 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 254005921.

It is not an unprimeable number, because it can be changed into a prime (254005901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48591 + ... + 53563.

It is an arithmetic number, because the mean of its divisors is an integer number (34208685).

Almost surely, 2^254005921 is an apocalyptic number.

It is an amenable number.

254005921 is a deficient number, since it is larger than the sum of its proper divisors (19663559).

254005921 is a wasteful number, since it uses less digits than its factorization.

254005921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8915.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 254005921 is about 15937.5632077178. The cubic root of 254005921 is about 633.3074740750.

The spelling of 254005921 in words is "two hundred fifty-four million, five thousand, nine hundred twenty-one".