255139026 has 24 divisors (see below), whose sum is σ = 542063760. Its totient is φ = 80043072.

The previous prime is 255139019. The next prime is 255139033. The reversal of 255139026 is 620931552.

It is an interprime number because it is at equal distance from previous prime (255139019) and next prime (255139033).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71836 + ... + 75303.

It is an arithmetic number, because the mean of its divisors is an integer number (22585990).

Almost surely, 2^255139026 is an apocalyptic number.

255139026 is an abundant number, since it is smaller than the sum of its proper divisors (286924734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255139026 is a wasteful number, since it uses less digits than its factorization.

255139026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147178 (or 147161 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 255139026 is about 15973.0719024238. The cubic root of 255139026 is about 634.2477926272.

The spelling of 255139026 in words is "two hundred fifty-five million, one hundred thirty-nine thousand, twenty-six".