255005431 has 2 divisors, whose sum is σ = 255005432. Its totient is φ = 255005430.

The previous prime is 255005353. The next prime is 255005453. The reversal of 255005431 is 134500552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255005431 - 2²³ = 246616823 is a prime.

It is a super-2 number, since 2×255005431² = 130055539678991522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 255005396 and 255005405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255005461) 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 as a sum of consecutive naturals, namely, 127502715 + 127502716.

It is an arithmetic number, because the mean of its divisors is an integer number (127502716).

Almost surely, 2^255005431 is an apocalyptic number.

255005431 is a deficient number, since it is larger than the sum of its proper divisors (1).

255005431 is an equidigital number, since it uses as much as digits as its factorization.

255005431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 255005431 is about 15968.8894729721. The cubic root of 255005431 is about 634.1370724333.

Adding to 255005431 its reverse (134500552), we get a palindrome (389505983).

The spelling of 255005431 in words is "two hundred fifty-five million, five thousand, four hundred thirty-one".