254221457 has 6 divisors (see below), whose sum is σ = 295727058. Its totient is φ = 217904064.

The previous prime is 254221439. The next prime is 254221489. The reversal of 254221457 is 754122452.

254221457 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 only one way, i.e., 247621696 + 6599761 = 15736^2 + 2569^2 .

It is not a de Polignac number, because 254221457 - 2¹⁰ = 254220433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (254221657) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2594048 + ... + 2594145.

It is an arithmetic number, because the mean of its divisors is an integer number (49287843).

Almost surely, 2^254221457 is an apocalyptic number.

It is an amenable number.

254221457 is a deficient number, since it is larger than the sum of its proper divisors (41505601).

254221457 is an equidigital number, since it uses as much as digits as its factorization.

254221457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5188207 (or 5188200 counting only the distinct ones).

The product of its digits is 22400, while the sum is 32.

The square root of 254221457 is about 15944.3236607891. The cubic root of 254221457 is about 633.4865538491.

The spelling of 254221457 in words is "two hundred fifty-four million, two hundred twenty-one thousand, four hundred fifty-seven".