255019139 has 8 divisors (see below), whose sum is σ = 261507120. Its totient is φ = 248544000.

The previous prime is 255019129. The next prime is 255019153. The reversal of 255019139 is 931910552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255019139 - 2¹² = 255015043 is a prime.

It is a super-2 number, since 2×255019139² = 130069522512602642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255019099 and 255019108.

It is not an unprimeable number, because it can be changed into a prime (255019109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46652 + ... + 51830.

It is an arithmetic number, because the mean of its divisors is an integer number (32688390).

Almost surely, 2^255019139 is an apocalyptic number.

255019139 is a deficient number, since it is larger than the sum of its proper divisors (6487981).

255019139 is a wasteful number, since it uses less digits than its factorization.

255019139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6421.

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 255019139 is about 15969.3186767626. The cubic root of 255019139 is about 634.1484350609.

The spelling of 255019139 in words is "two hundred fifty-five million, nineteen thousand, one hundred thirty-nine".