254021393 has 4 divisors (see below), whose sum is σ = 267390960. Its totient is φ = 240651828.

The previous prime is 254021387. The next prime is 254021413. The reversal of 254021393 is 393120452.

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 254021393 - 2⁴ = 254021377 is a prime.

It is a super-3 number, since 3×254021393³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (254021333) 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, 6684755 + ... + 6684792.

It is an arithmetic number, because the mean of its divisors is an integer number (66847740).

Almost surely, 2^254021393 is an apocalyptic number.

It is an amenable number.

254021393 is a deficient number, since it is larger than the sum of its proper divisors (13369567).

254021393 is a wasteful number, since it uses less digits than its factorization.

254021393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13369566.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 254021393 is about 15938.0485944798. The cubic root of 254021393 is about 633.3203324817.

The spelling of 254021393 in words is "two hundred fifty-four million, twenty-one thousand, three hundred ninety-three".