254404140053545 has 4 divisors (see below), whose sum is σ = 305284968064260. Its totient is φ = 203523312042832.

The previous prime is 254404140053491. The next prime is 254404140053599. The reversal of 254404140053545 is 545350041404452.

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

It is an interprime number because it is at equal distance from previous prime (254404140053491) and next prime (254404140053599).

It can be written as a sum of positive squares in 2 ways, for example, as 186347398431744 + 68056741621801 = 13650912^2 + 8249651^2 .

It is a cyclic number.

It is not a de Polignac number, because 254404140053545 - 2⁷ = 254404140053417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 254404140053495 and 254404140053504.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25440414005350 + ... + 25440414005359.

It is an arithmetic number, because the mean of its divisors is an integer number (76321242016065).

Almost surely, 2^{254404140053545} is an apocalyptic number.

It is an amenable number.

254404140053545 is a deficient number, since it is larger than the sum of its proper divisors (50880828010715).

254404140053545 is an equidigital number, since it uses as much as digits as its factorization.

254404140053545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50880828010714.

The product of its (nonzero) digits is 3840000, while the sum is 46.

Adding to 254404140053545 its reverse (545350041404452), we get a palindrome (799754181457997).

The spelling of 254404140053545 in words is "two hundred fifty-four trillion, four hundred four billion, one hundred forty million, fifty-three thousand, five hundred forty-five".