254390641 has 2 divisors, whose sum is σ = 254390642. Its totient is φ = 254390640.

The previous prime is 254390627. The next prime is 254390663. The reversal of 254390641 is 146093452.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170851041 + 83539600 = 13071^2 + 9140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254390641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 254390597 and 254390606.

It is not a weakly prime, because it can be changed into another prime (254390611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127195320 + 127195321.

It is an arithmetic number, because the mean of its divisors is an integer number (127195321).

Almost surely, 2^254390641 is an apocalyptic number.

It is an amenable number.

254390641 is a deficient number, since it is larger than the sum of its proper divisors (1).

254390641 is an equidigital number, since it uses as much as digits as its factorization.

254390641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 254390641 is about 15949.6282401817. The cubic root of 254390641 is about 633.6270508054.

The spelling of 254390641 in words is "two hundred fifty-four million, three hundred ninety thousand, six hundred forty-one".