255158549 has 4 divisors (see below), whose sum is σ = 262054764. Its totient is φ = 248262336.

The previous prime is 255158479. The next prime is 255158557. The reversal of 255158549 is 945851552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 231587524 + 23571025 = 15218^2 + 4855^2 .

It is a cyclic number.

It is not a de Polignac number, because 255158549 - 2¹² = 255154453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255158569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3448052 + ... + 3448125.

It is an arithmetic number, because the mean of its divisors is an integer number (65513691).

Almost surely, 2^255158549 is an apocalyptic number.

It is an amenable number.

255158549 is a deficient number, since it is larger than the sum of its proper divisors (6896215).

255158549 is an equidigital number, since it uses as much as digits as its factorization.

255158549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6896214.

The product of its digits is 360000, while the sum is 44.

The square root of 255158549 is about 15973.6830130061. The cubic root of 255158549 is about 634.2639695641.

The spelling of 255158549 in words is "two hundred fifty-five million, one hundred fifty-eight thousand, five hundred forty-nine".