255156919 has 2 divisors, whose sum is σ = 255156920. Its totient is φ = 255156918.

The previous prime is 255156841. The next prime is 255156983. The reversal of 255156919 is 919651552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255156919 - 2¹³ = 255148727 is a prime.

It is a super-2 number, since 2×255156919² = 130210106627145122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255156989) 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, 127578459 + 127578460.

It is an arithmetic number, because the mean of its divisors is an integer number (127578460).

Almost surely, 2^255156919 is an apocalyptic number.

255156919 is a deficient number, since it is larger than the sum of its proper divisors (1).

255156919 is an equidigital number, since it uses as much as digits as its factorization.

255156919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 121500, while the sum is 43.

The square root of 255156919 is about 15973.6319915040. The cubic root of 255156919 is about 634.2626189628.

The spelling of 255156919 in words is "two hundred fifty-five million, one hundred fifty-six thousand, nine hundred nineteen".