254122621 has 4 divisors (see below), whose sum is σ = 262885500. Its totient is φ = 245359744.

The previous prime is 254122591. The next prime is 254122639. The reversal of 254122621 is 126221452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 147744025 + 106378596 = 12155^2 + 10314^2 .

It is a cyclic number.

It is not a de Polignac number, because 254122621 - 2⁹ = 254122109 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 (254122021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4381396 + ... + 4381453.

It is an arithmetic number, because the mean of its divisors is an integer number (65721375).

Almost surely, 2^254122621 is an apocalyptic number.

It is an amenable number.

254122621 is a deficient number, since it is larger than the sum of its proper divisors (8762879).

254122621 is an equidigital number, since it uses as much as digits as its factorization.

254122621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8762878.

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

The square root of 254122621 is about 15941.2239492456. The cubic root of 254122621 is about 633.4044477548.

The spelling of 254122621 in words is "two hundred fifty-four million, one hundred twenty-two thousand, six hundred twenty-one".