255576109 has 2 divisors, whose sum is σ = 255576110. Its totient is φ = 255576108.

The previous prime is 255576091. The next prime is 255576119. The reversal of 255576109 is 901675552.

Together with previous prime (255576091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207273609 + 48302500 = 14397^2 + 6950^2 .

It is a cyclic number.

It is not a de Polignac number, because 255576109 - 2⁵ = 255576077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255576119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127788054 + 127788055.

It is an arithmetic number, because the mean of its divisors is an integer number (127788055).

Almost surely, 2^255576109 is an apocalyptic number.

It is an amenable number.

255576109 is a deficient number, since it is larger than the sum of its proper divisors (1).

255576109 is an equidigital number, since it uses as much as digits as its factorization.

255576109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94500, while the sum is 40.

The square root of 255576109 is about 15986.7479181977. The cubic root of 255576109 is about 634.6097662277.

The spelling of 255576109 in words is "two hundred fifty-five million, five hundred seventy-six thousand, one hundred nine".