255506231 has 2 divisors, whose sum is σ = 255506232. Its totient is φ = 255506230.

The previous prime is 255506227. The next prime is 255506291. The reversal of 255506231 is 132605552.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255506231 - 2² = 255506227 is a prime.

It is a super-2 number, since 2×255506231² = 130566868159650722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 255506194 and 255506203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255506291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127753115 + 127753116.

It is an arithmetic number, because the mean of its divisors is an integer number (127753116).

Almost surely, 2^255506231 is an apocalyptic number.

255506231 is a deficient number, since it is larger than the sum of its proper divisors (1).

255506231 is an equidigital number, since it uses as much as digits as its factorization.

255506231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 255506231 is about 15984.5622711415. The cubic root of 255506231 is about 634.5519239623.

The spelling of 255506231 in words is "two hundred fifty-five million, five hundred six thousand, two hundred thirty-one".