254255520121 has 4 divisors (see below), whose sum is σ = 254301083044. Its totient is φ = 254209957200.

The previous prime is 254255520107. The next prime is 254255520137. The reversal of 254255520121 is 121025552452.

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 60841155600 + 193414364521 = 246660^2 + 439789^2 .

It is a cyclic number.

It is not a de Polignac number, because 254255520121 - 2⁵ = 254255520089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (254255524121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22773090 + ... + 22784251.

It is an arithmetic number, because the mean of its divisors is an integer number (63575270761).

Almost surely, 2^254255520121 is an apocalyptic number.

It is an amenable number.

254255520121 is a deficient number, since it is larger than the sum of its proper divisors (45562923).

254255520121 is an equidigital number, since it uses as much as digits as its factorization.

254255520121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45562922.

The product of its (nonzero) digits is 40000, while the sum is 34.

The spelling of 254255520121 in words is "two hundred fifty-four billion, two hundred fifty-five million, five hundred twenty thousand, one hundred twenty-one".