255440041 has 2 divisors, whose sum is σ = 255440042. Its totient is φ = 255440040.

The previous prime is 255440023. The next prime is 255440069. The reversal of 255440041 is 140044552.

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., 244015641 + 11424400 = 15621^2 + 3380^2 .

It is a cyclic number.

It is not a de Polignac number, because 255440041 - 2¹³ = 255431849 is a prime.

It is a super-2 number, since 2×255440041² = 130499229092163362, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 255439988 and 255440015.

It is not a weakly prime, because it can be changed into another prime (255440741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127720020 + 127720021.

It is an arithmetic number, because the mean of its divisors is an integer number (127720021).

Almost surely, 2^255440041 is an apocalyptic number.

It is an amenable number.

255440041 is a deficient number, since it is larger than the sum of its proper divisors (1).

255440041 is an equidigital number, since it uses as much as digits as its factorization.

255440041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 255440041 is about 15982.4917018593. The cubic root of 255440041 is about 634.4971247517.

Adding to 255440041 its reverse (140044552), we get a palindrome (395484593).

The spelling of 255440041 in words is "two hundred fifty-five million, four hundred forty thousand, forty-one".