255166031 has 2 divisors, whose sum is σ = 255166032. Its totient is φ = 255166030.

The previous prime is 255165941. The next prime is 255166033. The reversal of 255166031 is 130661552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255166031 - 2¹⁰ = 255165007 is a prime.

It is a super-2 number, since 2×255166031² = 130219406752585922, which contains 22 as substring.

Together with 255166033, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 255165985 and 255166003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255166033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127583015 + 127583016.

It is an arithmetic number, because the mean of its divisors is an integer number (127583016).

Almost surely, 2^255166031 is an apocalyptic number.

255166031 is a deficient number, since it is larger than the sum of its proper divisors (1).

255166031 is an equidigital number, since it uses as much as digits as its factorization.

255166031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 255166031 is about 15973.9172090004. The cubic root of 255166031 is about 634.2701689993.

The spelling of 255166031 in words is "two hundred fifty-five million, one hundred sixty-six thousand, thirty-one".