254416021 has 4 divisors (see below), whose sum is σ = 254448000. Its totient is φ = 254384044.

The previous prime is 254416007. The next prime is 254416027. The reversal of 254416021 is 120614452.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 254416021 - 2⁵ = 254415989 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 (254416027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6330 + ... + 23428.

It is an arithmetic number, because the mean of its divisors is an integer number (63612000).

Almost surely, 2^254416021 is an apocalyptic number.

It is an amenable number.

254416021 is a deficient number, since it is larger than the sum of its proper divisors (31979).

254416021 is a wasteful number, since it uses less digits than its factorization.

254416021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31978.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 254416021 is about 15950.4238501677. The cubic root of 254416021 is about 633.6481219681.

The spelling of 254416021 in words is "two hundred fifty-four million, four hundred sixteen thousand, twenty-one".