254492993 has 6 divisors (see below), whose sum is σ = 261558486. Its totient is φ = 247613472.

The previous prime is 254492971. The next prime is 254493013. The reversal of 254492993 is 399294452.

It can be written as a sum of positive squares in 3 ways, for example, as 112954384 + 141538609 = 10628^2 + 11897^2 .

It is not a de Polignac number, because 254492993 - 2⁶ = 254492929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (254492933) 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, 91580 + ... + 94317.

It is an arithmetic number, because the mean of its divisors is an integer number (43593081).

Almost surely, 2^254492993 is an apocalyptic number.

It is an amenable number.

254492993 is a deficient number, since it is larger than the sum of its proper divisors (7065493).

254492993 is an equidigital number, since it uses as much as digits as its factorization.

254492993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185971 (or 185934 counting only the distinct ones).

The product of its digits is 699840, while the sum is 47.

The square root of 254492993 is about 15952.8365189392. The cubic root of 254492993 is about 633.7120176369.

The spelling of 254492993 in words is "two hundred fifty-four million, four hundred ninety-two thousand, nine hundred ninety-three".